A clinical psychologist wanted to compare three treatments for generalized anxiety disorder (GAD). She put an ad in the local paper to find people with GAD. She matched them into groups of three, based on severity of symptoms, and randomly assigned each of the matched cases to one of the three treatments. Treatment was administered individually. Outcome was assessed at the end of treatment using an interval-level measure of generalized anxiety.

a. For each of the three assumptions for a one-way, repeated-measures ANOVA, determine if it was violated.
b. Decide if the psychologist can proceed with the one-way, repeated-measures ANOVA.