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?

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

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?

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?

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?

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?

Find the value of t for a 90% confidence interval for the population mean when n = 19.

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 60 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?

Suppose the sampling distribution for average weight for soccer players is normally distributed with a mean of 152 pounds and a standard error of 5.  Find the range of central 95% of sample means.