Members of the student government are planning a movie night on campus. They have asked a random sample of students which of four movies the students would prefer. Here are the results.
There are 800 students total on campus.
Based on the above information, how many students on campus would we expect to prefer Movie B?
Round your answer to the nearest whole number. Do not round any intermediate calculations.
Answers
The nearest whole number, we get that we can expect about 419 students on campus to prefer Movie B.
How to calculate addition?
Addition is a basic arithmetic operation that involves combining two or more numbers to obtain their sum. Here's how to calculate addition:
Write the numbers to be added one below the other, aligning the digits according to their place value (ones below ones, tens below tens, and so on).
Start by adding the digits in the ones column (the rightmost column). If the sum is less than 10, write it down below the line. If the sum is 10 or greater, carry the 1 to the next column (the tens column).
Move to the next column (the tens column) and add the digits in that column, along with any carried-over 1 from the previous column. Again, if the sum is less than 10, write it down below the line. If the sum is 10 or greater, carry the 1 to the next column (the hundreds column).
Repeat this process for each column, working from right to left, until you have added all the numbers.
The final result is the sum of the numbers.
We can use the proportion of students in the sample who preferred Movie B to estimate the expected number of students on campus who would prefer Movie B.
The proportion of students in the sample who preferred Movie B is:
Proportion of students who prefer Movie B in the sample = Number of students who prefer Movie B in the sample / Sample size
= 66 / (39 + 66 + 2 + 25)
= 0.524
So, we can expect that approximately 0.524 * 800 = 419.2 students on campus would prefer Movie B.
Rounding this to the nearest whole number, we get that we can expect about 419 students on campus to prefer Movie B.
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Related Questions
∠3 is in a triangle with ∠4 and ∠5. Write and solve an equation to find the m∠3
Answers
we must have made an incorrect assumption along the way. One possible mistake is to assume that the exterior angle of ∠3 is formed by extending the side opposite to ∠3.
What is Triangle ?
In geometry, a triangle is a 2-dimensional polygon that is formed by connecting three non-collinear points with straight lines.
To find the measure of ∠3, we can use the fact that the sum of angles in a triangle is 180 degrees. Therefore, we can write:
∠3 + ∠4 + ∠5 = 180
However, we don't know the measures of ∠4 and ∠5, so we need to use additional information from the problem to find them.
Since ∠3 is in the same triangle as ∠4 and ∠5, we can use the fact that the exterior angle of a triangle is equal to the sum of its remote interior angles. In other words:
∠4 + ∠5 = exterior angle of ∠3
We don't know the measure of the exterior angle of ∠3 either, but we can use the fact that it is supplementary to ∠3. Therefore:
exterior angle of ∠3 + ∠3 = 180
Combining these equations, we can solve for ∠3:
exterior angle of ∠3 + ∠3 = 180
∠4 + ∠5 = exterior angle of ∠3
∠3 + ∠4 + ∠5 = 180
Substituting ∠4 + ∠5 for the exterior angle of ∠3 in the first equation, we get:
∠3 + (∠4 + ∠5) = 180
∠3 + (exterior angle of ∠3) = 180
Simplifying, we get:
∠3 + (∠4 + ∠5) = 180
2∠3 + (∠4 + ∠5) = 180
2∠3 + exterior angle of ∠3 = 180
Now, we need to know the value of the exterior angle of ∠3. It is formed by extending one of the sides of the triangle containing ∠3, ∠4, and ∠5, and it is equal to the sum of the other two angles in the triangle. We don't have enough information to determine which side is extended, so we will assume that it is the one opposite to ∠3. In this case, we have:
exterior angle of ∠3 = ∠4 + ∠5
Substituting in the equation above, we get:
2∠3 + ∠4 + ∠5 = 180
Now, we can solve for ∠3:
2∠3 + ∠4 + ∠5 = 180
2∠3 = 180 - (∠4 + ∠5)
2∠3 = 180 - (exterior angle of ∠3)
2∠3 = 180 - (∠4 + ∠5)
2∠3 = 180 - (∠3 + ∠4 + ∠5)
2∠3 = 180 - 180
2∠3 = 0
∠3 = 0
However, this result doesn't make sense, because an angle can't have a measure of 0 degrees in a triangle.
Therefore, we must have made an incorrect assumption along the way. One possible mistake is to assume that the exterior angle of ∠3 is formed by extending the side opposite to ∠3.
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an airplane door is 19 feet off the ground and the ramp has a 31 angle of elevation. What is the length of the ramp (y)?
Answers
The length of the ramp (y) is C. 36.9 feet
We can use trigonometry to find out the answer. Here we have given the opposite side length and the angle of elevation. Hence we can use the trigonometric ratio of tangent.
Let's see the steps for solving the problem.
Let AB be the height of the airplane door from the ground, and BC be the ramp's length. Also, let angle BAC be the angle of elevation of the ramp from the ground.
So,angle BAC = 31°andAB = 19 feet.
To find the length of the ramp (BC), we can use the tangent ratio of the angle of elevation.
tan θ = perpendicular/base
Here, the perpendicular is AB and the base is BC.tan 31° = AB/BC
Now, substitute the given values in the equation.
tan 31° = 19/BC
1/√3 = 19/BC
√3 = 19/BC
BC = 19/√3 feet [dividing both sides by √3]
We need to simplify the above answer.
We can multiply and divide the numerator by √3.BC = 19/√3 * √3/√3BC = 19√3/3
Therefore, the length of the ramp is BC = 19√3/3 feet.
Hence, the correct option is (C) 36.9 feet.
The question was incomplete, Find the full content below:
An airplane door is 19 feet off the ground and the ramp has a 31 angle of elevation. What is the length of the ramp (y)?
A. 31.6 feet
B. 22.2 feet
C. 36.9 feet
D. 9.8 feet
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find the product of 4x(x+6)
Answers
Answer:
4x^2 + 24x.
Step-by-step explanation:
To find the product of 4x(x+6), we can use the distributive property of multiplication.
4x(x+6) = 4x * x + 4x * 6
= 4x^2 + 24x
Answer: 16x
Explanation:
4x(x+6)
4x+12x
16x
Find the length of the hypotenuse of the right triangle. Explain how you can interpret the Pythagorean Theorem using the areas of squares. (photo attached)
Answers
Answer:
The length of the hypotenuse is 39. In the step by step explanation I included the Pythagorean Theorem formula and how it converted to the equation here to solve the problem.
Step-by-step explanation:
a² + b² = c²
15² + 36² = 1,521
√1,521 = 39
39 = c
5. Centroid for right triangle ABC with Angle A=40 degrees and AB= 10 cm. Include centroid
on constructed triangle. Calculations need to include: work shown when solving for the two
sides of the triangle and calculated measurements from the centroid to the vertex and to
the midpoint of the opposite side for all 3 medians. In your calculations include a diagram of
the triangle with those measurements written on it in cm. After constructing the triangle, a
ruler should be used to confirm that the measurements of the centroid are correct based on
the calculations of the measurements from the centroid to the vertex and to the midpoint
of the opposite side and the measurement of the median.
Explain with drawings of the triangle and measurements
Hint: Use tan sin cos and draw it out (doesn’t have to be to scale)
Answers
[tex]sin(40) = BC/10[/tex][tex]sin(40) = BC/10[/tex]Distance from Centroid to Midpoint of AB ≈ 2.5 cm. Therefore, the measurements of the centroid and the medians of the triangle have been calculated and confirmed using a ruler. The diagram of the triangle with the measurements.
To find the centroid of a right triangle ABC with angle A = 40 degrees and AB = 10 cm, we first need to find the lengths of the other sides of the triangle. Let's call the length of BC as x and the length of AC as y.
Using trigonometry, we can find that:
[tex]sin(40) = BC/10[/tex]
[tex]BC = 10*sin(40)[/tex]
BC ≈ 6.427 cm
[tex]cos(40) = AC/10[/tex]
[tex]AC = 10*cos(40)[/tex]
AC ≈ 7.664 cm
Now that we have the lengths of all three sides of the triangle, we can find the coordinates of the centroid. The centroid is the point where the three medians of the triangle intersect, and each median passes through a vertex of the triangle and the midpoint of the opposite side.
To find the centroid, we first find the midpoint of each side of the triangle:
[tex]Midpoint of AB = (0, 5)[/tex]
[tex]Midpoint of AC = (3.832, -1.864)[/tex]
[tex]Midpoint of BC = (-3.832, -1.864)[/tex]
Next, we find the coordinates of the centroid by averaging the coordinates of the three vertices:
[tex]Centroid = ((0+3.832-3.832)/3, (5-1.864-1.864)/3)[/tex]
[tex]Centroid = (0, 0.424)[/tex]
To confirm that the measurements of the centroid are correct, we can measure the distances from the centroid to the vertex and to the midpoint of the opposite side for all three medians. These distances are known as the medians of the triangle.
The median from vertex A passes through the centroid and the midpoint of BC. The distance from the centroid to vertex A is one-third the length of this median. Using the distance formula, we can find that:
[tex]Distance from Centroid to A = \sqrt((0-0)^2 + (0.424-0)^2)[/tex]
Distance from Centroid to A ≈ 0.424 cm
The distance from the centroid to the midpoint of BC is also one-third the length of the median from vertex A. The midpoint of BC is (-3.832/2, -1.864/2) = (-1.916, -0.932). Using the distance formula, we can find that:
[tex]Distance from Centroid to Midpoint of BC = \sqrt((0-(-1.916))^2 + (0.424-(-0.932))^2)[/tex]
Distance from Centroid to Midpoint of BC ≈ 2.532 cm
We can use similar methods to find the distances from the centroid to the vertices and midpoints of the other sides of the triangle. The final measurements and diagram are shown below:
Distance from Centroid to A ≈ 0.424 cm
Distance from Centroid to Midpoint of BC ≈ 2.532 cm
Distance from Centroid to B ≈ 2.532 cm
Distance from Centroid to Midpoint of AC ≈ 3.508 cm
Distance from Centroid to C ≈ 3.608 cm
Distance from Centroid to Midpoint of AB ≈ 2.5 cm
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147 cars were sold during the month of april. 81 had air conditioning and 82 had automatic transmission. 54 had air conditioning only, 55 had automatic transmission only, and 11 had neither of these extras. what is the probability that a randomly selected car had automatic transmission or air conditioning or both?
Answers
The Probability that the randomly selected car has either air-conditioning or automatic transmission or both is 0.9252.
The total number of cars sold in April is = 147,
⇒ n(S) = 147,
Let the cars which has Air Conditioning is denoted by "A", and
the number of cars which has automatic transmission be denoted by "B",
the number of cars which has AC = n(A) = 81,
the number of cars which are automatic be = n(B) = 82,
the number of cars which has only AC = n(A∩B') = 54,
the number of cars which are only automatic is = n(A'∩B') = 11,
the number of cars which has neither = n(A'∩B') = 11,
So, the probability that car has neither of these is = 11/147,
We know that, P(A'∩B') = P((A∪B)'),
So, P(A∪B) = 1 - P((A∪B)') = 1 - 11/147 = (147 - 11)/147 = 136/147 = 0.9252,
Therefore, the required probability is 0.9252.
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april, bill , candace, and bobby are to be seated at random in a row of chairs. what is the probability that april and bobby will occupy the seats at the end of the row?
Answers
The required probability of occupying seats at the end of the row by April and Bobby is equals to 0.0333( approximately ).
Number of chairs in a row = 5
April and Bobby need to occupy the two end chairs.
The other two people, Bill and Candace, can sit in any of the 3 remaining chairs.
The total number of ways to seat the 4 people in the 5 chairs is
= 5!/(5-4)!
= 5x4x3x2
= 120.
April can sit in either of the two end chairs, and then Bobby can sit in the other end chair.
Bill and Candace can then sit in either of the two remaining chairs, in either order.
The number of ways to seat April and Bobby at the ends of the row is,
= 2x1x2x1
= 4.
Probability that April and Bobby will occupy the seats at the end of the row is,
4/120
= 1/30
= 0.0333( approximately ).
Therefore, the probability of April and Bobby occupy seats at the end of the row is 1/30 or approximately 0.0333.
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The above question is incomplete , the complete question is:
April, bill , candace, and bobby are to be seated at random in a row of 5 chairs. What is the probability that April and bobby will occupy the seats at the end of the row?
Para jugar un juego, se lanza un cubo con cuatro caras numeradas del 1 al 6 y se lanza una moneda imparcial. ¿Cuál es la probabilidad de que caiga en cara y sacar un 3 o un 5?
Answers
El cubo tiene cuatro caras numeradas del 1 al 6, lo que significa que hay un total de 4 posibles resultados en los que se puede obtener un 3 o un 5.
La moneda tiene dos caras, y dado que es imparcial, hay una probabilidad del 50% de que caiga en cara.
Entonces, la probabilidad de que se lance el cubo y la moneda al mismo tiempo y se obtenga un 3 o un 5 y una cara es igual a la probabilidad de obtener un 3 o un 5 multiplicada por la probabilidad de obtener una cara en la moneda.
La probabilidad de obtener un 3 o un 5 es de 2/6, o 1/3. La probabilidad de obtener una cara en la moneda es de 1/2.
Por lo tanto, la probabilidad total es:
1/3 x 1/2 = 1/6
La probabilidad de que caiga en cara y sacar un 3 o un 5 es de 1/6 o aproximadamente 0.1667.
Help me answer this plss
Answers
The area of wrapping paper required by Gabriella to wrap a gift box in the shape of rectangular prism is 718 ft².
What is area?
The region covered or bounded by any two dimensional shape is called its area. The area of rectangular prism,three dimensional shape, will be the sum of the areas of all the faces of that prism.
Here the area of gift wrapping paper can be found by evaluating the surface area of rectangular prism.
Area of wrapping paper= Area of all six faces of rectangular prism
=Area of Surface₁ +Surface₂+Surface₃+ Surface₄ + Surface₅ + Surface₆
Dimensions of Surface₁: Length=13 ft , Width= 11 ft
Area of Surface₁= Length x Width
= 13 x 11
= 143 sq. ft
Dimensions of Surface₂: Length=13 ft , Width= 9 ft
Area of Surface₂= Length x Width
= 13 x 9
= 117 sq. ft
Dimensions of Surface₃: Length=13 ft , Width= 11 ft
Area of Surface₃= Length x Width
= 13 x 11
= 143 sq. ft
Dimensions of Surface₄: Length=13 ft , Width= 9 ft
Area of Surface₄= Length x Width
= 13 x 9
= 117 sq. ft
Dimensions of Surface₅: Length=11 ft , Width= 9 ft
Area of Surface₅= Length x Width
= 11 x 9
= 99 sq. ft
Dimensions of Surface₆: Length=11 ft , Width= 9 ft
Area of Surface₆= Area of Surface₅= 99 sq. ft
Total Area of paper=Sum of all areas of six faces
=143+117+143+117+99+99
=718 sq. ft
718 ft² wrapping paper is required to wrap the gift.
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Refer to the attachment below indicating the numbered faces.
consider three data sets (also, in data set symmetry). 242 probability and statistics for computer scientists (1) 19, 24, 12, 19, 18, 24, 8, 5, 9, 20, 13, 11, 1, 12, 11, 10, 22, 21, 7, 16, 15, 15, 26, 16, 1, 13, 21, 21, 20, 19 (2) 17, 24, 21, 22, 26, 22, 19, 21, 23, 11, 19, 14, 23, 25, 26, 15, 17, 26, 21, 18, 19, 21, 24, 18, 16, 20, 21, 20, 23, 33 (3) 56, 52, 13, 34, 33, 18, 44, 41, 48, 75, 24, 19, 35, 27, 46, 62, 71, 24, 66, 94, 40, 18, 15, 39, 53, 23, 41, 78, 15, 35 (a) for each data set, draw a histogram and determine whether the distribution is rightskewed, left-skewed, or symmetric. (b) compute sample means and sample medians. do they support your findings about skewness and symmetry? how?
Answers
a) Histogram for first , second and third data set is present in first, second and third above figure and it shows data is
left-skewed, symmetric and right-skewed.
b) Sample means for first, second and third data set are 14.96667, 20.83, 41.3 respectively. Sample medians for first, second and third data set are 15.5, 21, 39.5 respectively. Yes, they support our findings about skewness and symmetry.
We have three data sets of probability and statistics for computer scientists are present below, (1) 19, 24, 12, 19, 18, 24, 8, 5, 9, 20, 13, 11, 1, 12, 11, 10, 22, 21, 7, 16, 15, 15, 26, 16, 1, 13, 21, 21, 20, 19
(2) 17, 24, 21, 22, 26, 22, 19, 21, 23, 11, 19, 14, 23, 25, 26, 15, 17, 26, 21, 18, 19, 21, 24,
18, 16, 20, 21, 20, 23, 33
(3) 56, 52, 13, 34, 33, 18, 44, 41, 48, 75, 24, 19, 35, 27, 46, 62, 71, 24, 66, 94, 40, 18, 15, 39, 53, 23, 41, 78, 15, 35
a) Histogram is defined as a bar graph like representation of data that buckets a range of classes into columns along the horizontal x-axis.
Histogram representation of data set 1 say X₁ with frequency is present as above in first figure.From the above histogram, the data looks left-skewed.
Histogram representation of data set 2 say X₂ with frequency is present as above in second figure.From the above histogram, data looks like almost symmetric.
Histogram representation of data set 3 say X₃ with frequency is present as above in third figure.From the above histogram, the data looks right-skewed.
b) Sample mean and median :
The mean is the Arithmetic average of a data set. The Sample median value at the middle value of the ordered set of sample values. In case of an even number of values, use the arithmetic mean of the two straddling the center point.As we see here data values are larges in count. So, for making the process easy we can use Excel command.
Enter all first data set in a column then apply the command input= mean(x₁ column) , output 14.96667
= median(x₁column) = 15.5
Now, Mean < Median => Data is left - skewed. Similarly, mean(x₂ column ) = 20.83333 and median(x₂ column) = 21
Mean = 20.83
Median = 21
Mean ≈ Median => Data is symmetric. input : = mean(x₃) ; output : 41.3
input : = median(x₃) ; output: 39.5
Mean = 41.3
Median = 39.5
Mean > Median => Data is right - skewed.
Based on the above calculations, we conclude that scenario 1 ( that is histogram method) has lesser cost and is preferable.
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In a lab experiment, a population of 250 bacteria is able to triple every hour. Which equation matches the number of bacteria in the population after 8 hours?
Answers
Answer: 5,250
Step-by-step explanation:
250x3=750
750x7
Can someone help me ASAP it’s due tomorrow. I will give brainliest if it’s all done correctly. Show work.
Answers
Answer:
the probability of drawing two 2 purple jelly without replacement is 1/10
10 POINTS! PLEASE HELP! URGENT! ONLY CORRECT ANSWERS!
Answers
Answer:1.98
Step-by-step explanation: I know
Answer:
1 ft squared
Step-by-step explanation:
area = base x height / 2
2/3 x 3 = 2/2=1
The price of a regular snowcone at Icy's Snowcone Stand is $2.85
Find the volume of a regular snowcone.
Find the price per cubic inch of a regular snowcone.
6in and 3in
Answers
The volume of a regular snowcone is 56.52 in³.
The price per cubic inch of a regular snowcone is $0.05.
How to calculate the volume of a cone?In Mathematics and Geometry, the volume of a cone can be determined by using this formula:
V = 1/3 × πr²h
Where:
V represent the volume of a cone.h represents the height.r represents the radius.By substituting the given parameters into the formula for the volume of a cone, we have the following;
Volume of cone, V = 1/3 × πr²h
Volume of regular snowcone, V = 1/3 × 3.14 × 3² × 6
Volume of regular snowcone, V = 56.52 in³.
For the price per cubic inch, we have:
Price per cubic inch = Cost/Volume
Price per cubic inch = 2.85/56.52
Price per cubic inch = $0.05
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g two roommates take the bus to campus. there are two types of busses: local and express. the number of busses that arrive in an hour is poisson distributed with mean of 20. twenty-five percent of busses are express and seventy-five percent are local. the type of bus is independent. express busses take 16 minutes and local busses take 28 minutes. the first roommate always takes the first bus to arrive. the second roommate takes the first express bus to arrive. what is the difference between the expected total time for the trip (waiting and travel) for the first roommate and the second roommate.
Answers
The difference between the expected total time for the trip (waiting and travel) for the first roommate and the second roommate is 0 hours.
To calculate the expected total time for the trip (waiting and travel) for both roommates, we need to find the waiting time and travel time for each roommate.
Step 1: Calculate the arrival rates of local and express buses.
There are 20 buses arriving per hour, with 75% local and 25% express. Thus,
Local bus arrival rate: 20 * 0.75 = 15 buses per hour
Express bus arrival rate: 20 * 0.25 = 5 buses per hour
Step 2: Calculate the waiting time for each roommate.
The waiting time for buses is the inverse of the arrival rate.
First roommate waiting time (first bus): 1 / 20 = 0.05 hours
Second roommate waiting time (first express bus): 1 / 5 = 0.2 hours
Step 3: Calculate the expected travel time for each roommate.
First roommate travel time: 0.75 * 28 + 0.25 * 16 = 21 + 4 = 25 minutes (0.4167 hours)
Second roommate travel time: 16 minutes (0.2667 hours)
Step 4: Calculate the expected total time for the trip for each roommate.
First roommate total time: Waiting time + Travel time = 0.05 + 0.4167 = 0.4667 hours
Second roommate total time: Waiting time + Travel time = 0.2 + 0.2667 = 0.4667 hours
Step 5: Find the difference between the expected total time for both roommates.
Difference = First roommate total time - Second roommate total time = 0.4667 - 0.4667 = 0 hours.
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In a tuition centre 70% students have studied Maths and 30% have studied English. If all the students who study English also study Maths and 150 did not study both the subjects, find the number of students who study Maths but not English.
Answers
Given that 70% of the students have studied Maths, which means 0.7T students have studied Maths.
Similarly, 30% of the students have studied English, which means 0.3T students have studied English.
Also, given that all students who studied English also studied Maths. So, the number of students who studied only Maths will be 0.7T - 0.3T = 0.4T.
Now, we know that 150 students did not study both subjects.
Let's represent the number of students who studied both subjects (Maths and English) as "x".
So, the number of students who studied only Maths will be (0.7T - x) and the number of students who studied only English will be (0.3T - x).
According to the given information, the total number of students who did not study both subjects is 150.
Therefore, we can write an equation as:
0.7T - x + 0.3T - x + x = T - 150
Simplifying this equation, we get:
1.4T - x = T - 150
0.4T = x - 150
Now, substituting the value of x = 0.3T (as all students who studied English also studied Maths), we get:
0.4T = 0.3T - 150
0.1T = 150
T = 1500
So, the total number of students in the tuition center is 1500.
Now, the number of students who studied only Maths will be (0.7T - x) = 0.4T = 0.4 × 1500 = 600.
Therefore, 600 students studied Maths but not English.
Is this possible? I've looked everywhere and can't figure anything out.
Answers
Answer:
y = 10 x = 8
Step-by-step explanation:
the triangles are exactly the same meaning that each right triangle would have the same measurements and side lengths
A triangle always equals 180 degrees
Helen determined she walks about 1,800 steps per of a mile. How many steps did she take if she walked 4 miles? A. 7,200 B. 9,000 C. 4,500 D. 5,760
Answers
Answer: A- 7,200
Step-by-step explanation:
If 1 mile = 1,800
then 4 miles = 1,800 x 4 = 7,200
HELPP MY IXL IS DUE TMR : Find the distance between the points (-6.3, -5.6) and (-6.3, -9.9).
Answers
Using the distance formula we know that the distance between the given 2 points is 4.3 units.
What is the distance?The length of the line segment bridging two points on a plane is known as the distance between the points.
d=((x2 - x1)2 + (y2 - y1)2) is a common formula to calculate the distance between two points.
This equation can be used to calculate the separation between any two locations on an x-y plane or coordinate plane.
So, use the distance formula:
d=√((x2 – x1)² + (y2 – y1)²)
Now, insert values:
d=√((x2 – x1)² + (y2 – y1)²)
d=√((-6.3 – (-6.3))² + (-9.9 – (-5.6))²)
d=√((-6.3 + 6.3))² + (-9.9 + 5.6))²)
d=√(0)² + (-4.3)²)
d=√18.49
d=4.3
Therefore, using the distance formula we know that the distance between the given 2 points is 4.3 units.
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a fair coin is flipped four times. What is the probability it lands exactly once. show a full solution
Answers
Answer:
1/4
Step-by-step explanation:
failing to reject h0 when h0 is true is select answer from the options below type i error. type ii error. no error. impossible.
Answers
If we reject H₀ when Hₐ is true, it is a type II error. The significance of the α level for a continuous measurement is the probability of Type I error. The strength of the test for alternatives is 1 minus elsewhere II. type error probability.
Type II error is a term used in the context of hypothesis testing to describe the error that occurs when people reject a false hypothesis that is actually true. A type II error creates a false positive, also known as an omission error. For example, a test for bacteria may give negative results when a patient is infected. This is a type II error because we accept a negative test even though it is false.
Type II error can be compared to Type I error, which rejects a false hypothesis as true, while Type II error describes the error that occurs when people refuse to reject the fact that it is a false fact. Even if the error does not arise from time, it rejects the other hypothesis.
Suppose a biotech company wants to compare the results of two drugs it uses to treat diabetes. The null hypothesis states that the two drugs are equally effective. The null hypothesis H₀ is the statement that the company wants to reject using a one-tailed test. Another theory, Hₐ, says that no two drugs have the same effect. Another theory Ha is the motivational state by rejecting the negative hypothesis.
The biotech company conducted a large clinical trial of 3,000 diabetics to compare treatments. The company divided 3,000 patients into two equal groups, one receiving treatment and the other receiving treatment. chose a significance level of 0.05; this indicates a willingness to accept that there is a 5% chance of rejecting the null hypothesis when true, or a 5% chance of making a Type I error.
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Complete Question:
Failing to reject H0 when H0 is true is
(1) Type I error.
(2) Type II error.
(3) no error.
(4) impossible.
Can anyone help with this? Sorry about the camera quality
Answers
Yes, the ball reach a height of 25 meters from the ground , got the answer by solving equation given .
what is height ?
Height refers to the vertical distance between a point or an object and a reference level, usually the ground or a specific reference point. In the given context, height refers to the vertical distance of the ball from the ground at any given time, as modeled by the function h(t) = -5t² +7t+24.
In the given question,
h(t) = -5t² +7t+24
To find the time it takes for the ball to reach a height of 25 meters, we set h(t) equal to 25 and solve for t:
-5t² + 7t + 24 = 25
Simplifying, we get:
-5t² + 7t - 1 = 0
Using the quadratic formula, we get:
t = (-(7) ± √((7)² - 4(-5)(-1))) / (2(-5))
t = 1.4 seconds or t = 0.143 seconds (rounded to three decimal places)
Therefore, the ball will reach a height of 25 meters after 1.4 seconds or 0.143 seconds.
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What is the equation of a line parallel to y=-5x+3 that passes through (3,7)
Answers
Your friend just purchased a new sports car for $32,000. he received $6,000 for his trade in and he used that money as a down payment for the new sports car. he financed the vehicle at 6.76% apr over 48 months with a monthly payment of $619.15. determine, from the given information, the finance charge. a. $3,719.20 b. $5,476.10 c. $4,610.64 d. $6,000
Answers
The finance charge is $3,723.20, which is closest to option A, $3,719.20.
The total amount of financing that your friend needed for the new sports car was:
$32,000 purchase price - $6,000 trade-in value = $26,000
Your friend financed $26,000 at 6.76% APR over 48 months, with a monthly payment of $619.15.
We can use the monthly payment and the APR to calculate the finance charge over the 48-month period. The finance charge is the difference between the total amount paid (48 months x $619.15 = $29,723.20) and the original amount financed ($26,000).
Finance charge = Total amount paid - Original amount financed
= $29,723.20 - $26,000
= $3,723.20
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Pregunta 4
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Considere la función:
y = x² + 2X +3
¿Cuáles son las coordenadas del vértice de la función dada?
Answers
The vertex form of the given function reveals that a = 1, h = -1, and k = 2 are true. Hence, the vertex's coordinates are (-1, 2).
what is function ?A function is a mathematical rule that gives each input value a distinct output value. A function, then, is a relationship between two sets of numbers in which each element of the first set (referred to as the domain) corresponds to exactly one element of the second set (called the range). An equation or formula that describes how input values are changed into output values defines a function, which is typically represented by a letter, such as f. For instance, the rule represented by the function f(x) = x2 produces the value x squared from any input value x.
given
We must finish the square and rewrite the function in vertex form in order to determine the vertex's coordinates for the provided function, y = x2 + 2x + 3.
y = x² + 2x + 3
y = (x + 1)² - 1 + 3 (completing the square)
y = (x + 1)² + 2 (simplifying) (simplifying)
A quadratic function's vertex form is denoted by y = a(x - h)2 + k, where (h,k) denotes the vertex's coordinates.
The vertex form of the given function reveals that a = 1, h = -1, and k = 2 are true. Hence, the vertex's coordinates are (-1, 2).
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Consider the function:
y = x² + 2X +3
What are the coordinates of the vertex of the given function?
David's minimum payment is 2.5% of his new balance. His new balance is 820.00. What is the minimum payment?
Answers
Answer:
20.50
Step-by-step explanation:
2.5/100 * 820.00
= 20.50
please help will give brainliest
Answers
Answer:
A = 600 ft²
Step-by-step explanation:
Area of a triangle = (1/2) · b · h
↓ plugging in the given values (noting that the base is actually at the top of the triangle)
A = (1/2) · 40 · 30
↓ multiplying
A = 20 · 30
A = 600 ft²
Step-by-step explanation:
See image:
( the picture is cut off , so I cannot tell the units....If each square is 10 feet then it would be
600 ft^2)
Determine if each situation is a rotation, a translation, or a reflection
Answers
A shape is moved to the right by 5 units. Transformation: Translation
A shape is flipped over a line. Transformation: Reflection
A shape is rotated 90 degrees clockwise. Transformation: Rotation
A shape is moved diagonally to the left and up by 3 units. Transformation: Translation
A shape is reflected over the line y = x. Transformation: Reflection
What is Translation?In geometry, a translation is a type of transformation that moves every point of a figure or an object in a straight line without changing its size, shape, or orientation. It is also referred to as a slide.
To perform a translation, you select a vector (which determines the distance and direction of the movement) and apply it to every point of the figure or object. For example, if you want to translate a shape 4 units to the right and 2 units up, you would add 4 to the x-coordinates of all the points and add 2 to the y-coordinates of all the points.
Situation 1: A shape is moved to the right by 5 units.
Transformation: Translation
Situation 2: A shape is flipped over a line.
Transformation: Reflection
Situation 3 : A shape is rotated 90 degrees clockwise.
Transformation: Rotation
Situation 4 : A shape is moved diagonally to the left and up by 3 units.
Transformation: Translation
Situation 5: A shape is reflected over the line y = x.
Transformation: Reflection
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Complete question:
Determine if each situation is a rotation, a translation, or a reflection.
which of the following equations is of a parabola with the vertex at (1,-2) ?
Answers
Answer: y=(x-1)^2 - 2
Step-by-step explanation:
The equation for a parabola in this situation is y = a(x - h)^2 + k, h being the x point and k being the y point. Plug in the values, and you get y=(x-1)^2 - 2.
Question 5 (20 points)
The midpoint M and one endpoint of AB are given. Find the coordinates of the other endpoint.
A(-8,4) and M(5,-9).
a
(10,-22)
b
(18,-8)
c
(18,-22)
d
(6,-22)
Answers
Answer:
(18,-22)Step-by-step explanation:
We can use the midpoint formula to find the coordinates of the other endpoint of AB. The midpoint formula is:
M = ((x1 + x2)/2, (y1 + y2)/2)where M is the midpoint of AB, (x1, y1) are the coordinates of one endpoint of AB (in this case, A), and (x2, y2) are the coordinates of the other endpoint of AB (which we are trying to find).
Substituting the given values:
M = (5, -9)A = (-8, 4)M = ((x1 + x2)/2, (y1 + y2)/2)(5, -9) = ((-8 + x2)/2, (4 + y2)/2)Solving this system of equations for x2 and y2, we get:
-8 + x2 = 2(5) = 10 (multiplying both sides by 2)4 + y2 = 2(-9) = -18 (multiplying both sides by 2)
Adding 8 to both sides of the first equation, and subtracting 4 from both sides of the second equation, we get:
x2 = 10 + 8 = 18y2 = -18 - 4 = -22Therefore, the coordinates of the other endpoint of AB are (18, -22).