16. For her final project, Stacy plans on surveying a random sample of 50 students on whether they plan to leave town for Spring Break. Based on past years, she guesses that about
85% of the students will go somewhere. Can she use a Normal model for the sampling model?
a) Yes, because np = 42.5, which is greater than 10.
b) Yes, because a Normal model always applies to sample proportions.
c) No, because a Normal model is not appropriate for a binomial situation.
d) No, because ng = 7.5, which is less than 10.

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels.ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0