In each of the following scenarios, determine if the data are paired and explain why or why not: Compare pre- and post-test grades for students in a class. Assess gender-related salary gap by comparing salaries of randomly sampled men and women. Assess the effectiveness of a diet regimen by comparing the before and after weights of subjects.

1. is 4 and 2. is 3

step-by-step explanation:

so if you look at the first one you see that 1 is to 4 and 2 is to 8 and so on, so you can see for every 1 there is a times 4 so if it were 3 then it would be 3*4 and it is 12

for number 2 it is 3 because 1 is to 3 and 2 is to 6 so for every 1 there is 3 so if it were 3 then there would be 3*3 = 9

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value