Researchers are interested in the effectiveness of a new therapeutic methodology

Question

Researchers are interested in the effectiveness of a new therapeutic methodology at decreasing performance on the Global Depression Scale (GDS). Suppose clinical relevancy in this field would mandate that the methodology needs to decrease a score on the GDS in a clinically depressed individual by more than points. Which of the following represents the correct null and alternative hypotheses for the t test that should be implemented in this investigation?

Ho: µD=0, Ha: µD0

Ho: µD=5, Ha: µD5

Ho: µD=5, Ha: µD5

Ho: µD=5, Ha: µD>5

Ho: µD=0, Ha: µD0

Ho: µD=5, Ha: µD5

Ho: µD=5, Ha: µD5

Ho: µD=5, Ha: µD>5

Explanation / Answer

Since clinical relevancy in this field would mandate that the methodology needs to decrease a score on the GDS in a clinically depressed individual by more than points. this means the correct answer would be Ho: µD=5, Ha: µD>5

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