When comparing more than two treatment means, should you use an analysis of variance rather than using several t tests, and if so, why? ​a. Yes. Using several t tests increases the risk of a Type I error. b. ​Yes. Using several t tests increases the risk of a Type II error. c. ​Yes. The analysis of variance is more likely to detect a treatment effect. ​d. No. There is no advantage to using an analysis of variance rather than several t tests.

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