A researcher wants to study the effectiveness of medication and the time of day on alertness....

A researcher wants to study the effectiveness of medication and the time of day on alertness. 18 patients are randomly selected and three are assigned to each of six groups. Their alertness scores are listed on the table. Is there any difference in the mean score depending on 1) the type of treatment, 2) time, and 3) an interaction effect between treatment and time? Use an alpha level of .05.

	Time
	Morning	Afternoon	Evening
Treatment A	12 13 11	15 15 14	17 18 16
Treatment B	14 14 13	16 17 18	19 20 19

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milcah answered 2 days ago

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