An Experimenter Tests the Hypothesis That Physical Exercise Helps People's

question 27

Multiple Choice

An experimenter tests the hypothesis that physical exercise helps people's mood (makes them happier) . Subjects in the experimental group participate on Monday and Tuesday and those in the control group on Wednesday and Thursday. What is the independent variable?

• A) the hypothesis
• B) the day of the week
• C) the exercise
• D) the mood (degree of happiness)

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