Question

78 A researcher noted that there was a significant interaction effect of amount of time studying and hours of sleep the night before an exam on exam scores. He calculated simple effects to try to interpret the data. Here are the results. Graph them and explain the nature of the interaction.

Study 2 or more hours Study less than 2 hours t
6 or more hours of sleep 83 75 2.65*
Less than 6 hours of sleep 76 74 1.35

df = 30; *p < .05

Answer

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