Suppose that you wanted to estimate the population mean amount spent on soft drinks purchased at vending machines by UF students per day. In 2010, a survey found the sample standard deviation was 5 dollars. What sample size would you need to collect in order to make a 95% confidence interval with a margin of error of 0.50 dollars?

For a 95% confidence interval for the population mean, what value of t would you use? n = 15

Your friend decided to survey to find out how many Americans have blue eyes. She surveyed 200 randomly selected people and asked them if they have blue eyes. What would be the parameter that she could estimate with this data?

According to the Georgia department of Labor, as of May 2011, the average salary of all Georgians was 46,007 dollars. Someone who didn’t know this took a sample of 100 working Georgians and averaged their salaries. For the 100 people, the average salary was 46,780 dollars. Match the following terms with their amounts

Suppose that 60% of Americans planned to vote in the next election. You take a random sample of 32 people and ask them if they plan on voting in the next presidential election.  What approximate distribution would you expect for the sampling distribution of the sample proportion of Americans who planned on voting?

The amount of calories in a Big Mac at McDonalds is Normally distributed with a mean of 563 calories and a standard deviation of 35. Suppose that a random sample of 10 small servings was collected. What is the probability that the sample mean is greater than 590 calories?

A pollster was interested in testing the hypothesis to see if there was majority support for a certain political candidate. She found a p-value equal to 0.005. What would be her conclusion?

The Queensland male koala has an average weight of 6.5kg. Male Koalas weights are normally distributed with a standard deviation of 0.82. Suppose that 10 randomly selected koalas were selected. What is the sampling distribution of the sample mean?

Suppose that you were going to take a sample of Florida students. You were interested in estimating the proportion who had ever called/emailed/spoken with their congressmen. You were uncertain what this proportion was; however, you wanted to be 95% confident with a margin of error equal to 0.028. What sample size do you need?

In the Congo, the infant mortality rate is 5.934%. Suppose that a random sample of 1000  births was conducted. What is the probability that the infant mortality rate in the sample was less than 5.7%?