Before the season starts, the performing arts center offers tickets at 30% off the listed price. the listed ticket price for the least expensive seats is $45. what will the discounted ticket price be? a. $13.50 b. $15.00 c. $30.00 d. $31.50

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