Suppose that you were going to take a sample of UF students….

Suppose that you were going to take a sample of UF students. You were interested in estimating the proportion who had at least one non-related roommate. You were uncertain what this proportion was; however, you wanted to be 95% confident with a margin of error equal to 0.034. What sample size do you need?

The amount of calories in a Big Mac at McDonalds is Normally…

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?

Suppose that you were going to take a sample of Florida stud…

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 2012 presidential election, 57.5% of eligible voters…

In the 2012 presidential election, 57.5% of eligible voters cast their vote. Suppose that 200 randomly selected eligible voters were asked if they had voted in the 2012 presidential election. What approximate distribution would you expect for the sampling distribution of the sample proportion of Americans who voted in the 2012 presidential election?