half the students in a freshmen class are 14 years old, 1/3 are 15 and the rest are 13. is this mean age greater than or less than the median age?

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2

Find the ratios of the corresponding sides

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