Which of the following is NOT an assumption or condition that needs to be checked for a two-sample t-test for the difference between two means? a) Both groups must have the same sample size.
b) The samples selected must be random or representative.
C) Nearly Normal Condition: Each sample size is greater than 30 OR the population is approximately normal.
D) The two groups are independent.

23

step-by-step explanation:

answer: what statements

step-by-step explanation if you write the statements down then i could you.

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.