Suppose that you took a random sample of 25 students at FSU and asked them how many minutes they exercised yesterday. Suppose that you wanted to make a 99% confidence interval for the population mean. What value would you use for t?

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 5 randomly selected koalas were selected. What is the sampling distribution of the sample mean?

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

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?

The average height of men in Cameroon is 1.706 meters with a standard deviation of 0.154 m. Height is approximately normally distributed. Suppose that a sample of 35 men is selected, find the range of the central 68% of sample mean heights?

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?

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

What conditions are necessary for the sampling distribution of the sample proportion to be approximately Normally distributed? (There may be more than one answer. Please check all that apply.)

Suppose the sampling distribution for average height for soccer players is normally distributed with a mean of 71.5 and a standard error of 2 inches.  Find the range of central 68% of sample means.

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?