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Suppose a recent national survey reports that the mean height of adult males is 69.6 in with a standard deviation of 3.2 in. im

Suppose a recent national survey reports that the mean height of adult males is 69.6 in with a standard deviation of 3.2 in. im thinks that the mean height of adult males is shorter than reported. He randomly collects the heights of 40 adult males nd finds the mean height to be 68.8 in. Select the correct null hypothesis, Ho, and the correct alternative hypothesis, H- Ho: H1:

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