Question

The null hypothesis in analysis of variance asks whether: all variances are equal any groups are the same all groups are same specific groups are the same

Answer 1

If one is examining the means observed among, say three groups, it might be ... H0: μ1 = μ2 = μ3 = μ4; H1: The means are not all equal.

The hypothesis test for analysis of variance for t population: ... H_a : not all \mu_i (i = 1, \cdots t) are equal ... We wish to ask whether mean pig weights are the same for all 4 diets