How do I anaylsis this problem in excel: A group of psychologists were interested the effectiveness of family therapy as a treatment for anorexia. Family therapy involves a combination of traditional psychotherapy for the patient with training for parents to recognize and discourage undereating and over-exercise, which are two behaviors that anorexics tend to engage in to attain body weights that are dangerously low. The researchers recruited 43 adolescents who suffered from anorexia and randomly divided the sample into three experimental groups: one group received family therapy, another group received individual psychotherapy, and the remaining group received no treatment. The data provided for each group consist of the change in body weight in pounds between the period prior to the intervention and the end of the study period. For this exercise, your task is to determine whether either treatment for anorexia nervosa is effective, and if so, whether one of the treatments is more effective than the other.