The null hypothesis for a repeated-measures test states: A)Each individual will have a difference score of D = 0. B)The overall sample will have a mean difference of M_D = 0. C)The entire population will have a mean difference of μ_D = 0. D)All of the other options are correct.

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The null hypothesis for a repeated-measures test typically states that the mean difference in the population (μ_D) is zero, indicating no effect or change.

The Null Hypothesis for a Repeated-Measures Test States