According to a Survey, the Mean Height for Men Is $\bar { x } = 68.5$

question 42

Multiple Choice

According to a survey, the mean height for men is 68.6 inches. In a sample of 320 men between the ages of 60 and 69 , the mean height was $\bar { x } = 68.5$ inches. Public health officials want to determine whether the mean height $\mu$ for older men is less than the mean height of all adult men. Assuming the population standard deviation to be $\sigma = 2.85$ inches, compute the value of the test statistic.

• A) 0.74
• B) 429.95
• C) -0.63
• D) 0.63

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Definitions:

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