Nikki had a $50 gift card for her favorite store. she used the gift card to buy 4 dvds and still had money available on the card after the purchase. if the dvds were all the same price, which inequality best represents the possible price of each dvd?

a. p> 12.50
b. p≥12.50
c. p< 12.50
d. p≤12.50

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