The source table depicts the results of a fictional study investigating whether the number of hours of sleep a person gets varies with gender (male, female) and with the equal number of men and women were randomly assigned to drink 1, 2, or 3 cups of coffee during the course of a day and then record the number of hours they slept. Source SS df MS F Gender 0.38 1 0.38 0.33 Cups of coffee 75.38 2 37.69 32.76 Gender x cups 3.66 2 1.83 1.59 Within 34.51 30 1.15 Total 113.93 35 For data in the source table, what is the effect size for the interaction? a. medium b. small c. large d. too small to be of interest
The source table depicts the results of a fictional study investigating whether the number of hours of sleep a person gets varies with gender (male, female) and with the equal number of men and women were randomly assigned to drink 1, 2, or 3 cups of coffee during the course of a day and then record the number of hours they slept.
Source SS df MS F
Gender 0.38 1 0.38 0.33
Cups of coffee 75.38 2 37.69 32.76
Gender x cups 3.66 2 1.83 1.59
Within 34.51 30 1.15
Total 113.93 35
For data in the source table, what is the effect size for the interaction?
a. medium
b. small
c. large
d. too small to be of interest
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