If we are testing for the equality of three population means, we should use the A) test statistic t. B) test statistic z. C) test statistic F. D) test statistic χ².

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When testing for the equality of three or more population means, we use an analysis of variance (ANOVA) test, which produces a test statistic F. The t-test and z-test are appropriate for testing the equality of two population means, but are not suitable for use with three or more means. The χ2 test is appropriate for testing independence between two categorical variables.

If We Are Testing for the Equality of Three Population