What is the effect size of the new group

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Reference no: EM13629573

A residential treatment facility tests a new group therapy for patients with self-destructive behaviors. The therapists hope to decrease scores on a measure of self-destructive behaviors that has a mean in the overall residential treatment population of 35 and a standard deviation of 4.7. The mean score for the patients after the new group therapy is 27. What is the effect size of the new group therapy?

Reference no: EM13629573

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