To help Penny decide which day to start sprint training, and what color track pants to wear on the first day, her friend picks one card from two different bags. The first bag contains 7 numbers, representing the days of the week from Sunday through Saturday. To represent the pant colors, the second bag contains 4 cards colored pink, red, gray, and blue.

Which list shows the correct sample space of all the possible outcomes when a school day is selected, and either red or gray is selected? The numbers represent the day and the capital letters represent the colors. So, 1P means Sunday and pink, 2R means Monday and red, 3G means Tuesday and gray, 4B means Wednesday and blue, and so on.
A. 2P, 3P, 4P, 5P, 6P, 2R, 3R, 4R, 5R, 6R, 2G, 3G, 4G, 5G, 6G, 2B, 3B, 4B, 5B, 6B

B. 2R, 3R, 4R, 5R, 6R, 2G, 3G, 4G, 5G, 6G

C. 2P, 3P, 4P, 5P, 6P, 2B, 3B, 4B, 5B, 6B

D. 1R, 2R, 3R, 4R, 5R, 6R, 7R, 1G, 2G, 3G, 4G, 5G, 6G, 7G

Answers

Answer 1

When a school day is selected and either red or gray is chosen, there are 14 possible outcomes. The sample space is a way to show all possible outcomes, and the correct answer is option (B), which lists 10 possible outcomes.

How to find out the way?

The first bag contains 7 numbers, one for each day of the week, and the second bag contains 4 colored cards, but only 2 colors are acceptable. Therefore, there are 7 x 2 = 14 possible outcomes when a school day is selected and either red or gray is chosen.

The sample space for the problem lists all possible outcomes. Option (A) lists all 20 possible outcomes for any combination of day and color. Option (C) lists all 10 possible outcomes for any combination of day and color, but with the wrong color choices. Option (D) lists 14 possible outcomes, but includes the color pink, which is not an acceptable choice.

Option (B) is the correct answer, as it lists all 10 possible outcomes when a school day is selected and either red or gray is chosen. These outcomes are 2R, 3R, 4R, 5R, 6R, 2G, 3G, 4G, 5G, and 6G. Therefore, Penny's friend should choose a day between Monday and Saturday and wear either red or gray track pants on the first day of sprint training.

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Related Questions

a control chart that measures variables measures what? group of answer choices characteristic that has a discrete value and can be counted. characteristics that can be measured on a continuum of value like weight and volume. characteristics that are soft and pliable all of the above previousnext

Answers

A control chart that measures variables measures characteristics that can be measured on a continuum of value like weight and volume.

Control diagrams are a measurable instrument used to screen and control processes over the long haul. They are utilized to follow factors that can be estimated on a consistent scale, like weight, volume, temperature, or time. These factors are not discrete, yet rather fall along a reach or continuum of values. By plotting information over the long haul on a control graph, a cycle can be observed to guarantee that it stays inside a predetermined scope of OK variety. The control diagram gives a visual portrayal of the cycle information, permitting process proprietors to recognize when the interaction is crazy or when it might require remedial activity. Generally, control outlines that action factors assist with guaranteeing the nature of the cycle yield by empowering process proprietors to distinguish and address issues before they bring about deformities or mistakes.

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Jamal is buying lunch for his family. He buys 4 drinks that each cost $1.75 and 4 sandwiches that each cost $7.50. If the prices include tax and he also leaves a $7 tip, how much does he spend in all?

Answers

Jamal spends a total of $44 on lunch for his family, including tax and tip.

What is Algebraic expression?

Algebraic expression can be defined as combination of variables and constants.

The total cost of the drinks is 4 x $1.75 = $7.

The total cost of the sandwiches is 4 x $7.50 = $30.

So, the subtotal before the tip is $7 + $30 = $37.

Since the prices include tax, we can directly add the tip to the subtotal to get the total amount Jamal spends:

Total cost = Subtotal + Tip = $37 + $7 = $44.

Therefore, Jamal spends a total of $44 on lunch for his family, including tax and tip.

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Find the area of the regular pentagon with radius 19 mm.

Answers

Answer:

621.09 mm²

Step-by-step explanation:

Area of pentagon = [tex]\frac{(perimeter) (apothem)}{2}[/tex]

Let's solve

[tex]\frac{(5 times 19) times 13.08}{2}[/tex] = 621.09 mm²

So, the answer is 621.09 mm²

Answer: 8.58 cm²

Step-by-step explanation:

The area of the central triangle bounded by each of the sides can be computed as ...

 A = (1/2)r²sin(α) . . . . where α is the central angle, 360°/5 = 72°  

There are 5 such triangles, so the area of the pentagon is

A = (5/2)(1.9 cm)²sin(72°) ≈ 8.58 cm²

(co 1) in a normally distributed data set with a mean of 22 and a standard deviation of 4.1, what percentage of the data would be between 13.8 and 30.2? g

Answers

The percentage of data between 13.8 and 30.2 in a normally distributed data set with a mean of 22 and a standard deviation of 4.1 is approximately 94.19%.

To solve this problem, we can first standardize the values of interest using the standard normal distribution formula, z = (x - μ) / σ, where x is the value of interest, μ is the mean, and σ is the standard deviation.

For the lower value of 13.8, we have z = (13.8 - 22) / 4.1 = -1.95. For the upper value of 30.2, we have z = (30.2 - 22) / 4.1 = 2.05.

Next, we can use a calculator to find the area between these two z-scores. Alternatively, we can use the complement rule to find the area to the left of -1.95 and the area to the right of 2.05, and subtract their sum from 1.

Using a calculator, we find that the area between -1.95 and 2.05 is approximately 0.9419 or 94.19%. Therefore, approximately 94.19% of the data falls between 13.8 and 30.2 in this normally distributed data set.

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A building is constructed using bricks that can be modeled as right rectangular
prisms with a dimension of 7 1/4 in by 21 1/4 in by 3 1/4 in. if the bricks weight 0.06 ounces per cubic inch and cost cost $0.13 per ounce, find the cost of 1800 bricks. round your answer to the nearest cent.

Answers

The cost of 1800 bricks is $7,386.76. The cost of 1800 bricks, each measuring 7 1/4 in by 21 1/4 in by 3 1/4 in and weighing 0.06 ounces per cubic inch, can be calculated as follows:

First, we need to find the volume of one brick by multiplying its three dimensions:

Volume of one brick = 7.25 in x 21.25 in x 3.25 in = 526.0156 cubic inches

Next, we can find the weight of one brick by multiplying its volume by its weight per cubic inch:

Weight of one brick = 526.0156 cubic inches x 0.06 ounces/cubic inch = 31.56094 ounces

The total weight of 1800 bricks can be found by multiplying the weight of one brick by 1800:

Total weight of 1800 bricks = 31.56094 ounces/brick x 1800 bricks = 56,809.6928 ounces

Finally, we can find the cost of the bricks by multiplying their total weight by the cost per ounce:

Cost of 1800 bricks = 56,809.6928 ounces x $0.13/ounce = $7,386.76

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URGENT! Will give brainliest :))

What is the interquartile range (IQ) of the data set represented by this box plot?


A. 23

B. 56

C.10

D. 33

Answers

Answer: D. 33

Step-by-step explanation:

an acme bearings manager wants to compare the average ball bearing sizes from two different machines. she suspects the mean diameter for bearings from machine 2 exceeds that of bearings from machine 1. she takes two independent, random samples of size 50, one from each machine. the mean and standard deviation of bearings taken from machine 1 are 3.302 mm and 0.051 mm. the mean and standard deviation of bearings taken from machine 2 are 3.355 mm and 0.050 mm. run a hypothesis test consistent with her suspicions. be sure to a. check all necessary assumptions; b. state the null and alternative hypotheses; c. decide whether or not to pool and explain why; d. calculate the test statistic and p-value; e. state your conclusion in a complete sentence based on the p-value.

Answers

a. The necessary assumptions are the population variances are equal and combine the two sample variances into one.

b. The null and alternative hypotheses are defined.

c. The sample sizes are equal, and the sample standard deviations are approximately equal, we can safely assume equal variances and pool the sample variances.

d. The value of test statistic is 3.15 and p value is 0.05.

e. The mean diameter of bearings from machine 2 is greater than that of machine 1 at a 5% level of significance.

To begin the hypothesis test, the manager needs to state the null and alternative hypotheses. The null hypothesis (H0) is the statement of "no difference" between the mean diameters of bearings from the two machines. The alternative hypothesis (Ha) is the statement that the mean diameter of bearings from machine 2 is greater than that of machine 1.

In symbols,

H0: μ1 = μ2 (where μ1 is the mean diameter of machine 1 and μ2 is the mean diameter of machine 2) and

Ha: μ2 > μ1.

Before conducting the hypothesis test, we need to check some assumptions.

The next step is to calculate the test statistic and p-value. We use a t-test to compare the means of two independent samples. The test statistic is calculated as:

t = (x₁ - x₂) / [s_p x √(2/n)]

where x₁ and x₂ are the sample means, s_p is the pooled standard deviation, and n is the sample size.

Plugging in the numbers, we get:

t = (3.355 - 3.302) / [0.050 x √(2/50)] = 3.15

Using a t-distribution table with 98 degrees of freedom (n₁ + n₂-2), we find that the p-value associated with a t-value of 3.15 is less than 0.01.

Finally, we need to state our conclusion based on the p-value. Since the p-value is less than our significance level of 0.05, we reject the null hypothesis.

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Daily BER (kl/day) = 5.4 x 24 hours x body mass (kg) Mihir has a body mass of 65 kg. Calculate Mihir's daily basic energy requirement.​

Answers

Mihir's daily basic energy requirement is 8424 (kl/day).

How to find BMI body mass index or BER from body mass?

As the formula to find daily BER is given below,

[tex]Daily\ BER\ = 5.4 \times 24 \times body\ mass[/tex]

body mass = 65 kg

Therefore, put body mass, to find BER,

[tex]Daily\ BER\ = 5.4 \times 24 \times 65\\Daily\ BER\ = 8424\ (kl/day)[/tex]

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Mihir's daily basic energy requirement is 7,776 kJ/day.

what is meaning of body mass?

A person's BMI is calculated by dividing their weight in kilograms (or pounds) by their square of height in meters (or feet). A high BMI may indicate excessive body fat. BMI measures weight categories that could lead to health issues, but it does not assess a person's health or body fat percentage.

to calculate Mihir's daily basic energy requirement using the formula:

Daily BER (kl/day) = 5.4 x 24 hours x body mass (kg)

We can substitute the given values to get:

Daily BER (kl/day) = 5.4 x 24 hours x 65 kg

Daily BER (kl/day) = 7,776 kJ/day

Therefore, Mihir's daily basic energy requirement is 7,776 kJ/day.

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What is the number for a cup
Math

Answers

Answer:

8 fluid ounces

Step-by-step explanation:

1 Cup is equal to 8 fluid ounces in US Standard Volume. 1 metric cup is 250 milliliters (which is about 8.5 fluid ounces). A US cup is about 237-240 mL

Can someone tell me where and how I graph this?

Answers

Assuming the coordinates of point A are (3, 5): we would have the following results.

What is the explanation for the above response?

1. To reflect over the x-axis: the x-coordinate remains the same and the y-coordinate changes sign. So point B will have the same x-coordinate as point A (3), but the y-coordinate will be -5. Therefore, the coordinates of point B are (3, -5).

2. To reflect over the y-axis: the y-coordinate remains the same and the x-coordinate changes sign. So point C will have the same y-coordinate as point A (5), but the x-coordinate will be -3. Therefore, the coordinates of point C are (-3, 5).

3. To translate: add the given values to the x and y coordinates. So point D will have an x-coordinate of 3 + 3 = 6, and a y-coordinate of 5 + 4 = 9. Therefore, the coordinates of point D are (6, 9).

4. To rotate 180 degrees clockwise: flip the signs of both the x and y coordinates and then swap them. So point E will have an x-coordinate of -5 and a y-coordinate of -3. Therefore, the coordinates of point E are (-5, -3).

Plotting these points on a graph,
A (3, 5)

B  (3, -5)

C  (-3, 5)

D (6, 9)

E  (-5, -3)

we get the attached graph.

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. an olympic-size swimming pool is approximately 50 meters long by 25 meters wide. what distance will a swimmer travel if they swim from one comer to the opposite?

Answers

The distance a swimmer will travel if they swim from one corner to the opposite corner of an Olympic-size swimming pool is approximately 62.2 meters

The distance a swimmer will travel if they swim from one corner to the opposite corner of an Olympic-size swimming pool is approximately 62.2 meters. This can be calculated using the Pythagorean theorem, which states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides. In this case, the length of the pool is one side of the right triangle, the width of the pool is the other side of the right triangle, and the distance the swimmer travels is the hypotenuse.

Using the Pythagorean theorem, we can calculate the distance the swimmer travels as follows:

a² + b² = c²

where a is the length of the pool (50 meters), b is the width of the pool (25 meters), and c is the distance the swimmer travels.

To solve for c, we can plug in the values for a and b and simplify as follows:

50² + 25² = c²

500 + 625 = c²

125 = c²√3

125 = c

Approximately 62.2 meters (rounded to one decimal place)

Therefore, the distance a swimmer will travel if they swim from one corner to the opposite corner of an Olympic-size swimming pool is approximately 62.2 meters.

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What is the equation of the line that passes through the point (-6, -7) and has a
slope of 1/3?

Answers

Answer:

y = 1/3x - 5

Step-by-step explanation:

The equation is y = mx + b

m = the slope

b = y-intercept

m = 1/3

Y-intercept is located at (0, -5)

So, the equation of the line is y = 1/3x - 5

How much does 3.25 m of lace cost if 0.8 m costs 5.60

Answers

The cost of 3.25m lace would be $22.75

What is the fundamental principle of multiplication?

Multiplication is the mathematical operation that is used to determine the product of two or more numbers. If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.

we are given 0.8m of lace costs $5.60

now, we can find cost of 1m of lace

so, we have to divide both sides by 0.8

1 m of lace cost [tex]=5.60\div0.8[/tex]

1 m of lace cost [tex]=7[/tex]

so, we will also get

[tex]3.25\div0.8 = 4.0625[/tex]

Now multiply that by 3.25

[tex]3.25 \times 7 = 22.75[/tex]

So, the cost of 3.25m lace is $22.75

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I think I got it but can someone explain it

Answers

The coordinates of the image is at

(-3, -2)(-3, 0)(-1, 0)(1, -2)

How to find the coordinates of the image

The coordinates of the image is solved by applying the translation rule which is

(x, y) → (x + 6, y - 4)

This is applied as follows

preimage coordinates    translation        image coordinates

(-9, 2)                 →             (-9 + 6, 2 - 4) → (-3, -2)

(-9, 4)                 →             (-9 + 6, 4 - 4) → (-3, 0)

(-7, 4)                 →             (-7 + 6, 4 - 4) → (-1, 0)

(-5, 2)                →             (-5 + 6, 2 - 4) → (1, -2)

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Simplify the expression 4(32f+1)−7(f+5) .

Answers

Answer:

121f + 39

Step-by-step explanation:

Simplify the expression:

[tex]4(32f+1)-7(f+5)[/tex]

Use the distributive property to distribute 4 and 7

[tex]128f+4-7f+35[/tex]

Lets rearrange terms to make it easier

[tex]128f+-7f+4+35[/tex]

Add like terms and integers

[tex]121f+39[/tex]



Eva has a collection of 180 coins. How many coins represent 20% of her collection?

Answers

Answer:

36 coins

Step-by-step explanation:

10 percent is 18 coins. so just double that.

Answer:

Step-by-step explanation:

Total coin Eva has = 180

20% of her coins are represented by 20% of the 180

= 20/100 * 180

=0.2 * 180= 36

36 coins represent 20% of Eva's coins.

A percentage is a number or ratio that represents a fraction of 100. It is used to describe numbers. It is a dimensionless quantity. A percentage is denoted by the % symbol.

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Whats the best anime of all time?

Answers

According to the anime history, the best anime of all time with no haters is fullmetal alchemist brotherhood.

What is anime?

Anime is a style of animation that originated in Japan and has become popular worldwide. It is characterized by distinctive visual styles, such as colorful graphics, exaggerated features of characters, and expressive facial expressions. Anime covers a wide range of genres, including action, adventure, drama, comedy, romance, b fiction, fantasy.

There are numerous anime series that are widely popular and have received critical acclaim, such as "Fullmetal Alchemist: Brotherhood," "Attack on Titan," "Death Note," "Cowboy Bebop," "Dragon Ball Z," "Naruto," "One Piece," "Spirited Away," "Akira," "Ghost in the Shell," and many more.

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F=2(3+5x)+8(7-x)+4(x-1)

Answers

After simplifying the given functiοn F=2(3+5x)+8(7-x)+4(x-1) the answer is F = 2x + 58.

What is functiοn?  

In mathematics, a functiοn frοm a set X tο a set Y assigns each element οf X exactly οne element οf Y. The sets X and Y are referred tο as the functiοn's dοmain and cοdοmain, respectively.

Initially, functiοns represented the idealized relatiοnship between varied quantities and οther variables. Fοr instance, time affects a planet's pοsitiοn. In the past, the idea was develοped with the infinitesimal calculus at the end οf the 17th century, and until the 19th century, the functiοns that were taken intο cοnsideratiοn were differentiable (that is, they had a high degree οf regularity).

Expanding and simplifying the expressiοn F:

F = 2(3) + 2(5x) + 8(7) - 8(x) + 4(x) - 4(1)

F = 6 + 10x + 56 - 8x + 4x - 4

F = 2x + 58

Therefοre, F = 2x + 58.

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Complete question is:

Simplify F=2(3+5x)+8(7-x)+4(x-1).

Using trigonometric ratios find the missing side. Round to the nearest tenth.

Answers

The missing side has a length of about 46.2 units

What is trigonometric ratio of tangent (tan)?

[tex] \tan( \theta) [/tex] = opposite/adjacent

Here [tex] ( \theta) [/tex] is opposite angle of base of the triangle.

The base is the side opposite to the right angle and has a length of 14 units (given).

The side opposite to the angle of 17° is the "opposite" side.

The side adjacent to the angle of 17° is the "adjacent" side.

We want to find the length of the missing side (let's call it "x"). To do this, we can use the trigonometric ratio of tangent (tan), which relates the opposite and adjacent sides:

tan(17°) = opposite/adjacent

So, tan(17°) = opposite/x

We can rearrange this equation to solve for x,

x = opposite / tan(17°)

Plugging in the values we have,

x = 14 / tan(17°)

Using a calculator, we find that tan(17°) is approximately 0.303,

So,x = 14 / 0.303 ≈ 46.2

Therefore, the missing side has a length of about 46.2 units (rounded to the nearest tenth).

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Wnte an equation in slope-intercept form of the line that passes through (-3, 2) and (-2, - 5).

WILL GIVE BRAINLIEST

Answers

An equation in slope-intercept form of the line that passes through (-3, 2) and (-2, - 5) is: C. y = -7x - 19.

How to determine an equation of this line?

In Mathematics and Geometry, the point-slope form of a straight line can be calculated by using the following mathematical equation:

y - y₁ = m(x - x₁)

Where:

m represent the slope.x and y represent the points.

First of all, we would determine the slope of this line;

Slope (m) = (y₂ - y₁)/(x₂ - x₁)

Slope (m) = (-5 - 2)/(-2 + 3)

Slope (m) = -7/1

Slope (m) = -7

At data point (-3, 2), a linear equation in slope-intercept form for this line can be calculated as follows:

y - y₁ = m(x - x₁)

y - 2 = -7(x + 3)

y = -7x - 21 + 2

y = -7x - 19

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Solve for X. Assume that lines which appear are tangent.

Answers

According to the figure the value of x is

c) 7

How to find the value of x

The value of x is solved using the intersecting secant tangent theorem

The theorem have the formula

12^2 = 9 * (9 + x)

solving for x

144 = 81 + 9x

9x = 63

9x / 9 = 63 / 9

x = 7

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a computer in a house uses 0.4 kilowatt for 20.7 hour. if electricity costs $0.08 per kilowatt-hour, how much does it cost (in dollars, to the penny) to use the computer? use exact numbers; do not estimate.

Answers

The total amount of energy used by the computer is:

0.4 kW × 20.7 h = 8.28 kWh

The cost of the energy used is:

8.28 kWh × $0.08/kWh = $0.6624

Therefore, it costs $0.66 to use the computer.

A computer in a house uses 0.4 kilowatt for 20.7 hours. If electricity costs $0.08 per kilowatt-hour, how much does it cost (in dollars, to the penny) to use the computer? use exact numbers; do not estimate.

The cost of using the computer for 20.7 hours can be found by multiplying the electricity used per hour by the cost per kilowatt-hour.

That is,Cost = Power (kilowatts) × Time (hours) × Cost per kilowatt-hour (dollars)Given that the power used by the computer is 0.4 kilowatts and the time it was used is 20.7 hours, we can find the total cost of using the computer by substituting the values in the above equation.Cost = 0.4 kilowatts × 20.7 hours × $0.08 per kilowatt-hourCost = 0.4 × 20.7 × 0.08Cost = $0.06624Therefore, it costs $0.06624 to use the computer.

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A machine makes 50 parts. Out of 50 parts, 3 are defective. Using a number or a number range, describe the probability that a randomly selected part is not defective.

Answers

The probability that a randomly selected part is not defective is 47/50.

What is probability?

Probability is a way of calculating how likely something is to happen. It is difficult to provide a complete prediction for many events. Using it, we can only forecast the probability, or likelihood, of an event occurring. The probability might be between 0 and 1, where 0 denotes an impossibility and 1 denotes a certainty.

Here Total number of parts machine makes = 50

Number of parts defective out of 50 = 3

Then number of parts not defective out of 50 = 50-3 = 47.

Now using probability formula:

Probability = No of favorable item/ Total no of item

Now probability that a randomly selected part is not defective is,

= 47/50.

Hence the probability that a randomly selected part is not defective is 47/50.

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Which formula would be used to find the measure of angle 1? one-half(a° b°). one-half(a° â€"" c°). one-half(b° c°). one-half(a° â€"" b°).

Answers

The formula one-half(a° - b°) is derived from the fact that the exterior angle of a triangle is equal to one-half the difference between the measures of the two remote interior angles.

The formula that would be used to find the measure of angle 1 is one-half(a° - b°). This formula applies to a situation where angle 1 is an exterior angle of a triangle, and a° and b° are the measures of the two remote interior angles of the triangle that are adjacent to angle 1. The exterior angle of a triangle is equal to the sum of the measures of the two remote interior angles. Mathematically, this can be expressed as:

angle 1 = a° - b°

To find the measure of angle 1 using the formula one-half(a° - b°), we would simply plug in the known values of a° and b°, and perform the necessary arithmetic operations.

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Find the sum of the arithmetic series : 28 + 28.4 ... + 42.

Answers

The sum of the arithmetic series of 28 + 28.4 ...+ 42 is 1260.

What is arithmetic series?

An arithmetic series is a sequence of numbers in which each term is obtained by adding a constant difference, called the common difference, to the preceding term.

According to question:

To resolve this issue, we can utilise the following formula for the sum of an arithmetic series:

S = (n/2) * (a₁ + aₙ)

When n is the number of terms, a1 is the first term, and an is the nth term, S is the series total.

To find the number of terms, we need to figure out the pattern of the series. The common difference (d) is expressed as follows:

d = 28.4 - 28 = 0.4

To get from 28 to 42, we need to add (42 - 28)/0.4 = 35 terms.

So the number of terms is:

n = 35 + 1 = 36

The first term is a₁ = 28, and the last term is aₙ = 42.

Now we can plug these values into the formula:

S = (n/2) * (a₁ + aₙ)

= (36/2) * (28 + 42)

= 18 * 70

= 1260

Therefore, the sum of the arithmetic series is 1260.

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In the figure below, find the measure of the indicated arc.

Answers

Answer:

109°

Step-by-step explanation:

Given:

arc QS = 65°

QRS = 44°

Find: arc PS -

.

QRS = arc PS - arc QS

arc PS = QRS + arc QS

arc PS = 44° + 65° = 109°

8.phone calls arrive at a voicemail system at a rate of 16 per hour according to a poisson process. the voicemail system routes calls to appropriate operators based on pushing buttons on the phone. the voicemail system can handle only one call at a time. if a second call arrives while the voicemail system is busy, then the call is lost. the time for the voicemail system to route a call follows an exponential distribution with a mean of 2.5 minutes. once it has routed the call, it is free to take another call. what is the probability that an arriving call will be routed by the voicemail system?

Answers

The probability that an arriving call will be routed by the voicemail system is given by[tex]P(Y = 0) = e^(-0.1067) * 0.1067^0 / 0! = 0.8982,[/tex]rounded to four decimal places.

Since phone calls arrive at a rate of 16 per hour, the arrival rate of calls in minutes is 16/60 = 0.2667 calls per minute. We can model the arrival rate of calls as a Poisson distribution with parameter λ = 0.2667.

The time for the voicemail system to route a call follows an exponential distribution with a mean of 2.5 minutes. Let X be the time it takes to route a call. Then X follows an exponential distribution with parameter μ = 1/2.5 = 0.4.

We want to find the probability that an arriving call will be routed by the voicemail system. This is equivalent to finding the probability that there are no calls being routed by the voicemail system when a call arrives. Let Y be the number of calls being routed by the voicemail system. Then Y follows a Poisson distribution with parameter λμ = 0.2667 x 0.4 = 0.1067.

Therefore, the probability that an arriving call will be routed by the voicemail system is given by

[tex]P(Y = 0) = e^(-0.1067) * 0.1067^0 / 0! = 0.8982,[/tex]  rounded to four decimal places.

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undergraduate students at a college belong to one of four groups depending on the year they are supposed to graduate. each student must choose one of twenty-one distinct majors. how many students are needed to guarantee that there are two students expected to graduate in the same year who have the same major?

Answers

Total 84 students, are needed to guarantee that there are two students expected to graduate in the same year who have the same major.

We have undergraduate students at a college. Students belong to 4 groups (depending on year ) and 21 different majors. Total different majors for choice

= 21

We have to determine number of students needed to guarantee that there are two students expected to graduate in the same year who have the same major. Using the combinations, total different combinations possible for student having a particular major and year = 21× 4 = 84

By Pigeon Hole principle, if there is n boxes and m objects then atleast one box must contain more then one object. Here, we have 84 different Buckets . The 85th object ( 84 + 1 = 85) makes sure

bucket has 2 objects. The 85 is required number of students to that atleast one Year and 21 students in same year and same major.

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A right triangle with an angle of approximately 53.1° is inscribed in the first quadrant of the unit circle, with a horizontal length of 3/5 and a vertical length of 4/5.

Answers

The length 53.1°, 90°, and 39.9°,vertical length: 3/5 ,length of vertical: 4/5 1 hypotenuse.

What is angle?

Angle is a geometric concept that describes the relative difference between two straight lines or planes that meet at a common point. It is measured in degrees, radians or grads, and is often represented by the symbol θ. An angle can be acute, right, obtuse, straight, reflex, or full. Angles can be used to measure the size of a triangle, to calculate the area of a figure, and to determine the position of a point in a coordinate system.

We possess that

Angle = 53.1°

Vertical length = 3/5 (this is the adjacent cathetus)

Vertical length equals 4/5 (this is the opposite cathetus)

We can use it to check this.

tg(angle) = adjacent/opposite:

tg(53.1) = 1.33

and

(4/5)/(3/5) = 4/3 = 1.33

This makes sense, then.

Using the relationship, we can now identify the hypotenuse:

Sin(angle) = the antipode or hypotenuse

sin(53.1) = (4/5)/H

H = (4/5)/sin(53.1) = 1

Hence, there is always a 90° angle in a triangle or rectangle.

We may get the final angle using the fact that the sum of a triangle rectangle's three interior angles is always 180 degrees.

A + 53.1° + 90° = 180°

A = 90° - 53.1° = 36.9°

Now that we have located every missing part of the triangle.

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The weights of newborn babies are normally distributed with a mean of 8.5 pounds and a standard deviation of 2 pounds. A random sample of 25 newborns are selected.
b) Find the standard deviation of the mean of the 25 newborn babies. Round to 1 decimal place.

Answers

The standard deviation of the mean of the 25 newborn babies is approximately 0.4 pounds, rounded to 1 decimal place.

To find the standard deviation ,we will use the formula for the standard

deviation of the sampling distribution of the sample mean:

Standard deviation of the sample mean = σ / √n

Here, σ is the population standard deviation and

n is the sample size.

Given the population standard deviation (σ) is 2 pounds and the sample size (n) is 25 newborns, we can plug in the

values into the formula:

Standard deviation of the sample mean = 2 / √25

Standard deviation of the sample mean = 2 / 5

Standard deviation of the sample mean = 0.4

So, the standard deviation of the mean of the 25 newborn babies is approximately 0.4 pounds, rounded to 1 decimal place.

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