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?

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 570 calories?

Besides random sampling, 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.)

Your friend decided to survey UF students to find out how many of them have taken a statistics course. She surveyed 200 randomly selected students and asked them if they have taken a statistics course. What would be the parameter that she could estimate with this data?

Suppose that you took a random sample of 15 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?

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

Suppose the proportion of Americans with lupus is 0.004. You take a random sample of 4000 people and ask them if they have the disease. What approximate distribution would you expect for the sampling distribution of the sample proportion of Americans who have the disease?

In 2012, the General Social Survey asked its respondents if they had volunteered in the past month. The 95% confidence interval for this result was (0.313, 0.378). Is the following a correct or incorrect interpretation statement? “The probability that the sample proportion is between 0.313 and .378 is 0.95.”

Suppose the sampling distribution for average height for NFL players is normally distributed with a mean of 74 and a standard error of 2 inches.  Find the range of central 99.7% of sample means.