The Systolic Blood Pressures of the Patients at a Hospital

question 218

Multiple Choice

The systolic blood pressures of the patients at a hospital are normally distributed with a mean of 138 mm Hg and a standard deviation of 12.8 mm Hg. Find the two blood pressures having these properties: the mean is midway between them and 90% of all blood pressures are between them.

• A) 117.9 mm Hg, 160.1 mm Hg
• B) 121.6 mm Hg, 154.4 mm Hg
• C) 126.5 mm Hg, 149.5 mm Hg
• D) 116.9 mm Hg, 159.1 mm Hg

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