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Question 131

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Use the following information for questions:
A random sample of 800 high school boys showed that 420 had done strenuous exercise during the past year. The researcher wants to test the hypotheses below for p = the proportion of all high school boys who do strenuous exercise.
H0: p ≤ 0.50
Ha: p > 0.50
-Verify necessary data conditions for a z-statistic and calculate the z-statistic.

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np0 = n(1 - p0) = 400 > 10, so t...

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