The depth of the ocean and a buoy reaches a maximum of 6 feet and a minimum of 2 feet. the depth d (in feet) of the ocean is modeled by h=2 sin pi/6t + 4 where t is the time (in hours) with t=0 representing 12 a. m.

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