Question: Assuming that the null hypothesis H0: d = 0 is true, answer the following questions. a. Why is the probability that an observed paired difference

Assuming that the null hypothesis H0: ηd = 0 is true, answer the following questions.
a. Why is the probability that an observed paired difference exceeds 0 equal to 0.5?
b. In a simple random sample of size n, why does the number of paired differences that exceed 0 have a binomial with parameters n and 0.5?

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