A researcher examines the effectiveness of different body lotions by having 12 participants apply four different lotions to the same, unique body locations daily for two weeks.For example, lotion #1 is always applied to the right thigh, while lotion #2 is applied to the right upper arm.The participants were randomly selected at a drugstore in a busy area.Which assumption for the ANOVA is met?
A) random selection
B) normal population distributions
C) homoscedasticity
D) order effects

Question

Quizplus · Accepted Answer

The participants were randomly selected at a drugstore, which meets the assumption of random selection for ANOVA. The other assumptions (B: normal population distributions, C: homoscedasticity, D: order effects) cannot be confirmed based on the information provided.

A Researcher Examines the Effectiveness of Different Body Lotions by Having