Karen and holly took their families out to the movie theater .karen brought 3 boxes of candy and 2 small bags of popcorn and paid $18.35 .holly brought 4boxes of candy and 3bags of popcorn and paid $26.05 .Find cost for a box of candy?

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