When the null hypothesis is false, which of the following is a good estimate of the population variance? A) MS_treat B) MS_error C) both of the descriptive alternatives are correct D) neither of the descriptive alternatives is correct.

Question

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When the null hypothesis is false, the mean square error (MS_error) is a good estimate of the population variance because it measures the variation within groups, assuming that any difference in means across groups is due to random chance.

When the Null Hypothesis Is False, Which of the Following