Which of the following is the correct null hypothesis for a repeated-measures t test? A)M_D = 0 B)µ_D = 0 C)µ₁ = µ₂ D)M₁ = M₂

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The correct null hypothesis for a repeated-measures t test is that the mean difference between the two conditions being compared is equal to zero. This can be expressed as µD = 0, where µD is the population mean difference. Choice B correctly expresses this null hypothesis as µ_D = 0. Choices A, C, and D do not correctly express the null hypothesis for a repeated-measures t test.

Which of the Following Is the Correct Null Hypothesis for a Repeated-Measures