Asked by daniel
2. On a certain anxiety questionnaire, the population is known to have a mean of 12 and a standard deviation of 2.3. A higher score represents higher levels of anxiety. Participants in a new relaxation program complete the questionnaire after completing the program, and have a mean score of 10.2. What is the effect size of the relaxation program?
Answers
Answered by
PsyDAG
See previous post.
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