Q1)  For which of given situations would a repeated-measures study be suitable?

a) Estimating the effectiveness of cholesterol medication by comparing cholesterol levels before and after the medication

b) Comparing salary levels for college graduates and those who didn't graduate from college

c) Estimating the difference in self-esteem between student athletes and non-athletes

d) Comparing attitude scores for males versus females

Q2) What does null hypothesis for repeated-measures hypothesis test state?

a) μ_D = 0

b) μ₁ = μ₂

c) M_D = 0

d) M₁ = M₂

Q3) A repeated-measures study produced t statistic with df = 20. How many individuals participated in study?

a) 22

b) 21

c) 41

d) 19

Q4) T/F: For repeated-measures design, same group of individuals participates in all of the treatment conditions.

a) True

b) False