2. For the following scenarios, if you were to construct a confidence interval, what would be the appropriate multiplier? (State whether z* or t* AND look up the number) [16 points]

A. You want to estimate the proportion of Penn State students who own a Mac with 95% confidence. You take a simple random sample of 56 Penn State students.

B. You want to estimate the average weight of male golden retrievers with 98% confidence. You have a sample of 26 male golden retrievers.

C. You want to construct a 90% confidence interval for the mean number of credits completed by students enrolled in STAT 200 this semester across all campuses. You take a random sample of 600 students.

D. You want to construct an 80% confidence interval for the proportion of registered Pennsylvanian voters who plan to vote for Candidate A. You take a random sample of 21 registered voters in Pennsylvania.