1. Suppose we are supervising a research project in which depressed patients are randomly assigned to receive one of 6 different common treatments for depression. After receiving the treatment for 4 weeks, patients' depressive symptoms are reassessed, and their symptom level is quantified and analyzed. (a) If we use one-way ANOVA to compare the six group means, what is the null hypothesis (in symbolic form – i.e., Ho:..)? (b) Why can't we express the alternative hypothesis as

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