A professor at a large university believes that students take an average of 15 credit hours per term. A random sample of 24 students who reported the following number of credit hours that they were taking: 12 13 14 14 15 15 15 16 16 16 16 16 17 17 17 18 18 18 18 19 19 19 20 21 1. What does this sample tell us about students at the university in general? Find and interpret a 95% confidence for the mean number of credit hours students are taking. Make sure to check the necessary conditions. 2. What does this interval say about the professor's belief that students take an average of 15 credit hours