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The data below are from an independent-measures experiment comparing three different treatment conditions. Treatment 1 Treatment 2 Treatment 3 0 2 \"'4 0 3 2 G=36 0 1 4 2X2=114 3 3 3 0 2 4 0 1 4 T=3 T=12 T=21 SS= 7.5 SS= 4 SS=3.5 a. Explain why an ANOVA should be used instead of a series of t tests to evaluate the mean differences among the three treatments. b. Use an analysis of variance with u = .05 to determine whether these data indicate any signicant mean differences among the treatments. c. Compute 112, the percentage of variance accounted for by the treatments