The unit price- a 64 oz bottle of juice costs $2.39, and a 20 oz bottle costs $0.79. you can use a 20-cents-off coupon if you buy four 20 oz bottles or a 15-cents-off coupon if you buy a 64 oz bottle. which is the better buy? show work^

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