There are 32 students in Mr. Morgan's math class. One student will be randomly selected to present his/her project. If there are 20 boys and 12 girls in the class, what is the probability that the presenter will be a boy? HURRY IF YOUR RIGHT I WILL GIVE YOU A LIKE AND 5 STARS

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