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Suppose that you wanted to conduct a survey and sample UF students. Suppose you wanted to ask them how many of them planned on getting a meal plan for the Fall semester. In previous year, the proportion of students with a meal plan has been around 0.40. Suppose you want to be 95% confident and have a margin of error of 0.05. What size sample do you need?

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)?

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?

Suppose that you wanted to estimate the population proportion of students at UF that approved of the job that 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 0.045. What size sample would you need?

The amount of calories in a small serving of French Fries at McDonalds is Normally distributed with a mean of 230 calories and a standard deviation of 25. Suppose that a random sample of 15 small servings was collected. What is the probability that the sample mean is greater than 240 calories?

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?

Fifteen females were recorded on their reaction time to a stimulus. The 95% confidence interval for the population mean was (14.56, 18.75) seconds. What do we know from this confidence interval?

For Ho:p = 0.60 versus Ha: p does not equal 0.60, when the test statistic equals 1.54, what is the p-value?

Suppose that one of the UF softball players had a 0.34 probability of getting a hit each time at bat. Suppose that there were a total of 60 at-bats. What would be the mean and standard error of the sampling distribution of the sample proportion of hits?

According to the Georgia department of Labor, as of May 2011, the average salary of all people living in Atlanta was 55,733 dollars. Someone who didn’t know this took a sample of 50 working people in Atlanta and averaged their salaries. For the 50 people, the average salary was 56,771 dollars. Match the following terms with their amounts