You are studying treatments for anorexia. Patients are randomly assigned to one of four treatments: 1 = standard, 2 = group therapy, 3 = family therapy, 4 = cognitive behavioral therapy. Define the...

You are studying treatments for anorexia. Patients are randomly assigned to one of four treatments: 1 = standard, 2 = group therapy, 3 = family therapy, 4 = cognitive behavioral therapy. Define the dummy variables for the most convenient coding if primary interest is in comparison to the standard treatment.