The Systolic Blood Pressures of the Patients at a Hospital

Multiple Choice

The systolic blood pressures of the patients at a hospital are normally distributed with a mean of 136 mm Hg and a standard deviation of 13.8 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) 113.3 mm Hg, 158.7 mm Hg
B) 118.3 mm Hg, 153.7 mm Hg
C) 114.3 mm Hg, 159.7 mm Hg
D) 123.6 mm Hg, 148.4 mm Hg