Among 157 African-American men ,the mean systolic blood pressure was 146 mm Hg with a standard deviation of 27. We wish to know if on the basis of these data, we may conclude that the mean systolic blood pressure for a population of African-American is greater than 140. Use α=0.01. Solution 1. Data: Variable is systolic blood pressure, n=157 , sample mean=146, s=27, α=0.01.

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Question (1).Among 157 African-American men ,the mean systolic blood pressure was 146 mm Hg with a standard deviation of 27. We wish to know if on the basis of these data, we may conclude that the mean systolic blood pressure for a population of African-American is greater than 140. Use α=0.01.

Solution 1. Data: Variable is systolic blood pressure, n=157 , sample mean=146, s=27, α=0.01.

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