In a correlated groups design with a directional H 1 , if H 0 is correct, the sample set of difference scores must be a random sample from a population of difference scores with µ D = 0.

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The Answer of In a correlated groups design with a directional H 1 , if H 0 is correct, the sample set of difference scores must be a random sample from a population of difference scores with µ D = 0.

In a Correlated Groups Design with a Directional H 1