Weston completed a hypothesis test and found that he could not reject the null hypothesis. which of the following is a valid reason for his conclusion?

a. the z-statistic is less than 0.

b. the z-statistic lies in the critical region.

c. the z-statistic is greater than 0.

d. the z-statistic lies outside the critical region.

Find the value of ax 4 ; a = 2, x = 1. select one: a. 2 b. 4 c. 1 d. 8

How do i put 3(x+7) in distributive property

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