A Researcher Examines the Effectiveness of Different Body Lotions by Having

question 28

Multiple Choice

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

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Definitions:

Law of Diminishing Returns

A principle stating that as one factor of production is increased while others are held constant, the resulting addition to output will eventually decrease.

Coase Theorem

An economic theory stating that if private parties can bargain without cost over the allocation of resources, they can solve the problem of externalities on their own.

Director of Housing

A position responsible for overseeing housing programs, policies, and services, typically within a governmental or nonprofit organization.

Marginal Benefit (MB) Curves

Graphs that show the additional benefit received from consuming one more unit of a good or service.