One week a student exercised 2 hours at school and another 1/4 of an hour at home. If 1/5 of the students total exercise came from playing soccer, how much time did the student spend playing soccer that week? I’m terrible at fractions it wants the answer in hours and to not include units in this answer.

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