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Weight Loss Overweight or obese adults from psychiatric programs were recruited and randomly assigned to a treatment group or control group. Patients in the treatment group received both weight-management sessions plus exercise sessions plus their usual care. Patients in the control group received their usual treatment for mental illness and no additional treatment. After 18 months, some of the patients had lost
a. Find the percentage of each group that lost
b. Test the hypothesis that the treatment and result arc independent using a significance level of 0.05.
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