In this study, researchers were interested in knowing if the amount of coffee (none, one cup,...

In this study, researchers were interested in knowing if the amount of coffee (none, one cup, 4 cups) and the time coffee was ingested (am v. pm) affected student exam performance (exams were in the evening). This study took place over a 3-day period. Students were randomly assigned to either ingest coffee in the morning (AM) or the evening (PM). On day one, students were given no coffee; on day two, students were given one cup of coffee; and on day three, students were given four cups of coffee. Below are the data from this experiment. Exam scores could range from 0-100, higher scores indicate better exam performance.

Participant	Amount of Coffee	Time coffee was ingested	Exam Score
1	None	AM	75
	One cup	AM	84
	4 cups	AM	70
2	None	PM	70
	One cup	PM	84
	4 cups	PM	50
3	None	AM	60
	One cup	AM	90
	4 cups	AM	78
4	None	PM	70
	One cup	PM	80
	4 cups	PM	62
5	None	AM	70
	One cup	AM	87
	4 cups	AM	69
6	None	PM	62
	One cup	PM	79
	4 cups	PM	46
7	None	AM	75
	One cup	AM	96
	4 cups	AM	81
8	None	PM	68
	One cup	PM	92
	4 cups	PM	63

What type of design is this experiment? (between-subjects, within-subjects, mixed) Be sure to also write the factorial notation.
What are the IV(s)? Be sure to indicate the levels of and the type of variable (between-subjects, within-subjects).
Draw a block diagram for your variables. Be sure to include cell means and marginal means.

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Expert Solution

orchestra answered 1 year ago

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