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The alternative hypothesis in one-way ANOVA states that:
AEvery mean equals zero
BOne pair of means differs
CAll pairs of means differ
DNo pair of means differs
Answer & Solution
Correct answer: B. One pair of means differs
1. The alternative is deliberately modest.
2. The null hypothesis is that all the group population means are the same.
3. The alternative hypothesis is that at least one pair of means is different.
4. It does not claim that every group differs from every other.
_Source: OpenStax Introductory Statistics 2e (CC BY 4.0), Ch 13 'The F Distribution and One-Way ANOVA', sections 13.1-13.4_
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