. Julia hypothesizes that the number of red cups bought by college students differs significantly from the average U.S. population. The mean number of red cups bought by the US population is 58 cups per month. Julie gathers information on the number of red cups bought by 41 college students. The sample mean of red cups is 119 with a sample standard deviation of 23. Do college students differ in the number of red cups they have bought per month, as compared to the rest of the U.S. population? (Usea = .01)

1. State the null hypothesis in words. (1 point)

1. Set up the criteria for making a decision. That is, find the critical value(s). (1 point)

1. Compute the appropriate test statistic. Show your work. (3 points)

1. Based on your answers above, evaluate the null hypothesis: (1 point)

Reject Fail to Reject (circle one)

1. State your conclusion in words. (1 point)

1. Compute the 99% confidence interval. (2 points)

In words, interpret the confidence interval you calculated above.