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

Question 1

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

Correct Answer:

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