A daredevil jumps off the CN Tower and falls freely for several seconds before releasing his parachute. His height, h(t), in metres, t seconds after jumping can be modelled by h1(t)=−4.9t2+t+360. before he released his parachute; and h2(t)=−4t+142. after he released his parachute.

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