Suppose that you wanted to estimate the population proportio…

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…

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?

According to the Georgia department of Labor, as of May 2011…

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

The general social survey asked participants (randomly selec…

The general social survey asked participants (randomly selected Americans) in 2010 how many hours they worked. The 95% confidence interval for the population mean hours spent working was (40.36, 42.36). Finish the following sentence.  “We are 95% confident that  . . .”