A researcher plans to investigate whether a cup of hot milk at night helps people relax so that they fall asleep quickly. In this study,
A) the control group consists of the subjects drinking hot milk at bedtime.
B) experimenter effects will occur unless the researcher improves the hypothesis.
C) the independent variable is the consumption of hot milk at bedtime.
D) the independent variable is the amount of time it takes the person to fall asleep.
Correct Answer:
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