SOLUTION: 1. Based on data from the National Health Service, women between the ages of 18 and 24 have an average systolic blood pressure (in mm Hg) of 114.8 with a standard deviation of 13.1

Question 1075117: 1. Based on data from the National Health Service, women between the ages of 18 and 24 have an average systolic blood pressure (in mm Hg) of 114.8 with a standard deviation of 13.1. Systolic blood pressure for women between the ages of 18 to 24 follow a normal distribution.

If 40 women from this population are selected, find the probability that their mean systolic blood pressure is greater than 120
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
z=(x-mean)/sigma/sqrt(n)
>(120-114.8)*sqrt(40)/13.1
>2.51
0.006

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