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

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.

multiply then divide

step-by-step explanation: