Harrigan University is a liberal arts university in the Mid-west that attempts to attract the highest quality students, especially from its region of the country. It has gathered data on 178 applicants who were accepted by Harrigan (a random sample from all acceptable applicants over the past several years). Using the data, Calculate 95% confidence intervals for the mean combined score, the mean high school GPA, and the mean SAT score of all acceptable students who accept Harrigan's invitation to enroll. Do the same for all acceptable students who choose to enroll elsewhere. Then calculate 95% confidence intervals for the differences between these means, where each difference is a mean for students enrolling at Harrigan minus the similar mean for students

enrolling elsewhere.

For the above questions, can you verify if I'm supposed to Calculate the mean based on the sample size of 178 or based on the sample size of the students that accepted harrigans offer to attend?