Question 1
In a one-way ANOVA, if the null hypothesis isH0:μ1=μ2=μ3=μ4, then the alternative hypothesis is:
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Ha:μ1≠μ2≠μ3≠μ4.
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Ha: None of the population means differs.
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Ha: At least two of the population means differ.
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Ha: At least one of the population means differs.
Question 2
In a two-way ANOVA, a test for _______________ is always considered first.
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factor A main effect
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error factor main effect
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factor B main effect
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interaction