Question: Consider Example 8, for which the changes in the writing portion GRE scores for the first three people who attended a training workshop were 0.5,

Consider Example 8, for which the changes in the writing portion GRE scores for the first three people who attended a training workshop were 0.5, -0.5, and 1.5. Show how to use the sign test to test that the probability that the difference is positive equals 0.50 against the alternative hypothesis that it is greater than 0.50.

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