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If an Experimental Group's Mean of 20 Indicates Fewer Undesirable

Question 22

Multiple Choice

If an experimental group's mean of 20 indicates fewer undesirable symptoms than the control group's mean of 25,and the standard deviation is 10,then the Cohen's d effect size should be reported as:


A) + .50
B) - .50
C) +5.0
D) - 5.0

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