The average salary for an exercise specialist is $41,000. The standard deviation is about $3000. Suppose that a sample of 10 was taken, what is the approximate distribution of the sampling distribution of the sample mean?

Suppose that you wanted to estimate the population proportion of students at UF that approved of the job that what congress was doing. You decided to take a sample, but you needed to determine what size sample to take. You were uncertain what this proportion would be. You wanted to be 95% confident and to have a margin of error of 0.035. What size sample would you need?

Suppose the sampling distribution for average weight for NFL players is normally distributed with a mean of 246.9 pounds and a standard error of 7 pounds.  Find the range of central 68% of sample means.

If the p-value equals 0.001 and the alpha equals 0.05, what decision do you make?

Suppose that you took a random sample of 15 students at UF and asked them how many minutes they exercised yesterday. Suppose that you wanted to make a 90% confidence interval for the population mean. What value would you use for t?

For a confidence interval for the population mean, if you decrease the confidence level, what happens to the width of the interval (everything else remains the same)?

What would be the value of z for a 97.5% confidence interval for the population proportion?

What value of t would you use for a 90% confidence interval for the population mean when the sample size was equal to 15?

Suppose that 1/6 of all Americans have blue eyes. We take a random sample of 100 and find that 20 have blue eyes. What would be the mean of the sampling distribution of the sample proportion?

In the year 2015, according to salary.com, nurses in Los Angelos have an average annual salary of $85,693. The standard deviation is about 6,000 dollars. The distribution of salaries is right skewed. Suppose that a sample of 100 nurses is taken from Los Angelos. What is the approximate sampling distribution of the sample mean?