Multiple Choice
Keller has individuals run on a treadmill for 0, 15, or 30 minutes and then measures their self-reported mood. In this hypothetical study, the independent variable is:
A) the self-reported mood.
B) the individuals who run for 15 or 30 minutes.
C) the individuals who run for 0 minutes.
D) the number of minutes individuals run on the treadmill.
Correct Answer:

Verified
Correct Answer:
Verified
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