A researcher wishes to determine whether exercising at least three times a week is more effective than

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A researcher wishes to determine whether exercising at least three times a week is more effective than pharmaceuticals (antidepressants) or psychotherapy in addressing mental health issues. He randomly assigns 20 psychiatric patients to one of four treatment conditions and asks their self-reported depression at the moment on a scale of 1 (very depressed) to 15 (very happy). Test the null hypothesis that there is no difference between exercise, antidepressants, therapy, and the control group using the following data.

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Related Book For  answer-question

Elementary Statistics In Social Research

ISBN: 9780205845484

12th Edition

Authors: Jack A. Levin, James Alan Fox, David R. Forde

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