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In a Comparison Group Study Using Two Randomly Selected Groups

Question 9

Multiple Choice

In a comparison group study using two randomly selected groups, effect size = .24, and p<.01. This means the:


A) difference in means is small and probably due to sampling error
B) difference in means is small but probably is not due to sampling error
C) difference in means is large enough to be important, but may well be due to sampling error
D) difference in means is large and probably not due to sampling error

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