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. hypertension is commonly defined as a systolic blood pressure above 140. if 4 women in that age bracket are randomly selected, find the probability that their mean systolic blood pressure is greater than 140.

0.0001

Step-by-step explanation:

Given : 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.

i.e.

Sample size =4

Let x be the sample mean systolic blood pressure.

Then the probability that their mean systolic blood pressure is greater than 140 will be

Hence, the required probability = 0.0001

no not all of them.

step-by-step explanation:

some of them have a square base.