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Hog95 Hog95
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9 years ago
A researcher is interested in the effects of sleep deprivation and caffeine intake on mood. Participants were randomly assigned to a sleep condition (normal or deprived) and a caffeine condition (0 cups, 2 cups, or 4 cups). After the manipulations, mood was measured (such that higher numbers indicated better mood). The results were as follows:

          Normal Condition                      Deprived Condition
   0 cups   2 cups   4 cups   0 cups   2 cups   4 cups
   16   18   18   0   5   6
   17   20   17   6   4   8
   20   20   17   3   4   6
   19   19   17   2   2   7
   18   18   16   4   5   8

a.   Make a chart and graph of the cell and marginal means.
b.   Analyze these data using a factorial analysis of variance, testing each effect at the .01 level, and including R2 for each effect.
c.   Explain your analysis and conclusions to a person who is familiar with one-way analysis of variance (including the structural model), but who does not know anything about factorial designs or the two-way analysis of variance. 
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padrepadre
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9 years ago
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Mastering in Nutritional Biology
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Hog95 Author
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#2
9 years ago
Great, exactly what I needed.
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#3
Staff Member
Educator
9 years ago
Glad to be part of the success. Let me know if you need anything else.
Mastering in Nutritional Biology
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