Suppose that a researcher was interested in the effect of caffeine on memory. She measured memory performance
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Suppose that a researcher was interested in the effect of caffeine on memory. She measured memory performance either immediately after studying (0-day delay) or after a 10-day delay. Half of the participants in each delay group received either a cup of decaffeinated coffee or a cup of regular, caffeinated coffee before answering a set of 10 questions about the studied material. The following group means for number of correct answers were observed.
a. What are the levels of factor A?
b. Is there an interaction between Coffee and Delay in the memory test? Explain.
Transcribed Image Text:
Factor A: Delay 0-Day 10-Day Factor B: Coffee Decaf Regular M = 4 M = 8 Overall M = 6 M = 2 M = 6| Overall M = 4 Overall Overall M = 3 M = 7
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Related Book For
Essentials Of Statistics For The Behavioral Sciences
ISBN: 9780357365298
10th Edition
Authors: Frederick J Gravetter, Larry B. Wallnau, Lori Ann B. Forzano, James E. Witnauer
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