Anewspaper article says that on the average, college freshmen spend 7.5 hours a week going to parties.14 one administrator does not believe that these figures apply at her college, which has nearly 3,000 freshmen. she takes a simple random sample of 100 freshmen, and interviews them. on average, they report 6.6 hours a week going to parties, and the sd is 9 hours. is the difference between 6.6 and 7.5 real? (a) formulate the null and alternative hypotheses in terms of a box model. (b) fill in the blanks. the null says that the average of the box is . the alternative says that average of the box is . (c) now answer the question: is the difference real?