Two Technicians Are Discussing the Environmental Protection Agency (EPA)

question 8

Multiple Choice

Two technicians are discussing the Environmental Protection Agency (EPA) . Technician A says the EPA was formed in the 1890's to address pollution from factories. Technician B says that the EPA met with early resistance in its efforts to protect the environment. Who is correct?

• A) A only
• B) B only
• C) Both A and B
• D) Neither A nor B

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Definitions:

Independent Variables

Variables in an experiment that are manipulated or changed to observe their effects on dependent variables.

Main Effects

A statistical term referring to the individual impact of each independent variable on the dependent variable in an experiment, distinguishing from interactions between variables.

Factorial Design

Factorial design is a statistical test used in experiments where there are two or more independent variables and it evaluates the effect of each, as well as the interaction between them, on the dependent variable.

Experimental Conditions

Describes the specific environments, variables, or settings manipulated by researchers in an experiment to observe their effects on the outcomes.