For women aged 18-24, systolic blood pressures (in mm Hg) are normally distributed with a mean of 114.8 and a standard deviation of 13.1. If 23 women aged 18-24 are randomly selected, find the probability that their mean systolic blood pressure is between 119 and 122.

Question

Quizplus · Accepted Answer

The standard error of the mean is 13.1/sqrt(23). Using the z-score formula for both 119 and 122, and finding the probability between these z-scores gives approximately 0.0577.

For Women Aged 18-24, Systolic Blood Pressures (In Mm Hg)