A researcher hypothesizes that freshmen spend more time studying than sophomores, who spend more time studying than juniors, and so on. In conducting a one-way ANOVA with this data, how can the null hypothesis (H₀) be stated? A) H₀: all μs are different B) H₀: not all μs are different C) H₀: all μs are equal D) H₀: not all μs are equal

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The null hypothesis in ANOVA typically states that there are no differences between the means of the groups being compared, which means all group means (μs) are equal.

A Researcher Hypothesizes That Freshmen Spend More Time Studying Than