A sleepresearcher is interested indetermining whether taking naps ca n improve performance and, if so, whether it matters if the naps are taken in the afternoon or evening. Thirty undergraduates are randomly sampled and assigned to one of six conditions: napping in the afternoon or evening, resting in the afternoon or evening, or engaging in a normal activity control condition, again in the afternoon or evening. There are live subjects in each condition. Each subject performs the activity appropriate for his or her assigned condition, after which a performance test is given. The higher the score is, the better is the performance. The following results were obtained. What is your conclusion? Use = 0.05 and assume the data are from normally distributed populations.
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