# Question: Nike s annual report says that the average American buys 6 5

Nike’s annual report says that the average American buys 6.5 pairs of sports shoes per year. Suppose the population standard deviation is 2.1 and that a sample of 81 customers will be examined next year.

a. What is the standard error of the mean in this experiment?

b. What is the probability that the sample mean is between 6 and 7 pairs of sports shoes?

c. What is the probability that the difference between the sample mean and the population mean is less than 0.25 pair?

d. What is the likelihood the sample mean is greater than 7 pairs?

a. What is the standard error of the mean in this experiment?

b. What is the probability that the sample mean is between 6 and 7 pairs of sports shoes?

c. What is the probability that the difference between the sample mean and the population mean is less than 0.25 pair?

d. What is the likelihood the sample mean is greater than 7 pairs?

## Relevant Questions

Refer to the Real Estate data, which report information on the homes sold in the Goodyear, Arizona, area last year. Use statistical software to compute the mean and the standard deviation of the selling prices. Assume this ...The owner of Britten’s Egg Farm wants to estimate the mean number of eggs produced per chicken. A sample of 20 chickens shows they produced an average of 20 eggs per month with a standard deviation of 2 eggs per month.a. ...Fashion Industries randomly tests its employees throughout the year. Last year in the 400 random tests conducted, 14 employees failed the test. Develop a 99% confidence interval for the proportion of applicants that fail the ...A survey of 36 randomly selected “iPhone” owners showed that the purchase price has a mean of $416 with a sample standard deviation of $180.a. Compute the standard error of the sample mean.b. Compute the 95% confidence ...The following hypotheses are given.H0: σ21 = σ22H1: σ21 ≠ σ22A random sample of eight observations from the first population resulted in a standard deviation of 10. A random sample of six observations from the second ...Post your question