Newest statistics Questions | Wyzant Ask An Expert

03/15/22

What are the Objective Function and Constraints for this problem?

A producer has three products, A, B, and C, which are composed from many of the same raw materials and subassemblies by the same skilled workforce. Each unit of product A uses 15 units of Raw... more

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Statistics

03/14/22

A certain flight arrives on time 81 % of the time. Suppose 148 flights are randomly selected. Use the normal approximation to the binomial to approximate the probability that….

A certain flight arrives on time 81 % of the time. Suppose 148 flights are randomly selected. Use the normal approximation to the binomial to approximate the probability that (a) exactly 108... more

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Statistics Biology Biostatistics Morphometrics

03/14/22

statistical comparisons of frog jumps using morphometric measurements vs jump length

Is there a useful formula for using length and width measurements from frogs combined with their mass to obtain a single numerical value to use for statistical analysis against jump length? I was... more

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Statistics

03/14/22

A food distribution company has employees that order food supplies for local restaurants by predicting sales.

A food distribution company has employees that order food supplies for local restaurants by predicting sales. The company pulls an SRS of 500 orders and finds that 408 orders were correct.... more

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Statistics

03/14/22

A team of eye surgeons has developed a new technique for risky eye operations to restore the sight of people that have a certain disease

A team of eye surgeons has developed a new technique for risky eye operations to restore the sight of people that have a certain disease, An SRS of 100 patients who have had the surgery revealed... more

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Statistics

03/14/22

Normal Distribution

Company XYZ know that replacement times for the quartz time pieces it produces are normally distributed with a mean of 10.9 years and a standard deviation of 2.4 years.If the company wants to... more

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Statistics Probability

03/13/22

ratio and probability question

Imagine you are the coach for a co-ed softball championship game. There are two players on base and two outs. You are about to name a pinch hitter among three players. Maggie has gotten hits 4 out... more

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Statistics Probability

03/13/22

ratio and probability question

Imagine you are the coach for a co-ed softball championship game. There are two players on base and two outs. You are about to name a pinch hitter among three players. Maggie has gotten hits 4 out... more

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Statistics Math Probability Maths

03/13/22

A random sample of size 50 is taken from a large population with mean μ=160 and standard deviation σ=18.

A random sample of size 50 is taken from a large population with mean μ=160 and standard deviation σ=18. What is the mean of the sampling distribution of the sample means? What is the standard... more

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Statistics Math College Algebra

03/12/22

Answer the following below using binomial distribution.

According to Masterfoods, the company that manufactures M&M’s, 12% of peanut M&M’s are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. You randomly... more

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Statistics Math Probability Maths

03/12/22

A population consist of five (5) measurements 2,3,5,6 and 7. What is the variance of the sampling distribution?

A population consist of five (5) measurements 2,3,5,6 and 7. What is the variance of the sampling distribution?a.0.89b.1.29c.3.90d.2.20

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Statistics Math Probability Maths

03/12/22

A population consist of five (5) measurements 2,3,5,6 and 7.How many different samples of size n=2 can be drawn from the population?

A population consist of five (5) measurements 2,3,5,6 and 7.How many different samples of size n=2 can be drawn from the population?a.7b.8c.9d.10

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Statistics Math Probability Maths

03/12/22

What is the mean of a sampling distribution of sample means if a population has a mean of 8.5?

1.What is the mean of a sampling distribution of sample means if a population has a mean of 8.5?2.What is the mean of a population if the mean of the sampling distribution of sample means is... more

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Statistics Math Probability Maths

03/12/22

A population consist of the data (1,2,3,4).What is the lowest value of the sample mean in this sampling distribution?

A population consist of the data (1,2,3,4).What is the lowest value of the sample mean in this sampling distribution?a.1.5b.0c.2d.2.5

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Statistics Probability

03/12/22

Probability rolling a die

You roll a die repeatedly until you observe a 6 and then you stop. Let N denote the number of rolls you made before you stop. a) What is the probability of N = 10? b) What is the probability of... more

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Statistics

03/11/22

Find the area under the standard normal curve to the left of z = 1.25.

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Statistics Math

03/11/22

Business Statistics.

The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airports. The maximum possible rating is 10. Suppose a simple random... more

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Statistics Math

03/11/22

Business statistics.

For a t distribution with 16 degrees of freedom, find the area, or probability, in each region.a. To the left of 1.337.......... ( to 2 decimals).

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Statistics

03/11/22

Binomial Distribution

After being rejected for employment, Kim Kelly learns that the Bellevue Credit Company has hired only four women among the last 22 new employees. She also learns that the pool of applicants is very... more

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Statistics Math Probability

03/10/22

If Roberto scored 85, what was his z-score?

On a nationwide math test, the mean was 75 and the standard deviation was 10. If Roberto scored 85, what was his z-score?

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Statistics Probability

03/10/22

how would you change the game (ticket prices, number of tickets, prize amounts, etc.) in order to encourage more people to purchase tickets while still raising at least $4000 for your organization?

If you were organizing a raffle like this, how would you change the game (ticket prices, number of tickets, prize amounts, etc.) in order to encourage more people to purchase tickets while still... more

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Statistics Probability

03/10/22

Using the empirical rule (as presented in the book), what is the approximate percentage of daily phone calls numbering between 59 and 69?

In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-shaped and has a mean of 64 and a standard deviation of 5. Using the... more

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Statistics

03/10/22

Probaility help.

Factories A and B produce computers. Factory A produces 3 times as many computers as factory B. The probability that an item produced by factory A is defective is 0.038 and the probability that an... more

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Statistics Math Math Help

03/09/22

Help Solving: A Single Population Mean using the Normal Distribution

You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=26.3. You would like to be 99% confident that... more

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Statistics

03/09/22

math statistic problem

Suppose you want to select 1000 New Yorkers. Given the population of each borough, what sampling techniques one could use to draw this sample? Explain.NYC has 5 boroughs. Use the 2011 population... more

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What are the Objective Function and Constraints for this problem?

A certain flight arrives on time 81 % of the time. Suppose 148 flights are randomly selected. Use the normal approximation to the binomial to approximate the probability that….

statistical comparisons of frog jumps using morphometric measurements vs jump length

A food distribution company has employees that order food supplies for local restaurants by predicting sales.

A team of eye surgeons has developed a new technique for risky eye operations to restore the sight of people that have a certain disease

Normal Distribution

ratio and probability question

ratio and probability question

A random sample of size 50 is taken from a large population with mean μ=160 and standard deviation σ=18.

Answer the following below using binomial distribution.

A population consist of five (5) measurements 2,3,5,6 and 7. What is the variance of the sampling distribution?

A population consist of five (5) measurements 2,3,5,6 and 7.How many different samples of size n=2 can be drawn from the population?

What is the mean of a sampling distribution of sample means if a population has a mean of 8.5?

A population consist of the data (1,2,3,4).What is the lowest value of the sample mean in this sampling distribution?

Probability rolling a die

Find the area under the standard normal curve to the left of z = 1.25.

Business Statistics.

Business statistics.

Binomial Distribution

If Roberto scored 85, what was his z-score?

how would you change the game (ticket prices, number of tickets, prize amounts, etc.) in order to encourage more people to purchase tickets while still raising at least $4000 for your organization?

Using the empirical rule (as presented in the book), what is the approximate percentage of daily phone calls numbering between 59 and 69?

Probaility help.

Help Solving: A Single Population Mean using the Normal Distribution

math statistic problem

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