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 12.5 . If 12 women are randomly selected, find the probability...

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

12.5

If 12 women are randomly selected, find the probability that their mean systolic blood pressure is at least 120.

a. Define the parameter

x overbar equals

The blood pressure of a randomly selected woman

x overbar equals

The

mean blood pressure of 12 randomly selected women

b. State the mean of

x overbar

nothing

c. State the standard deviation of

x overbar

nothing

(use 2 decimal places)

d. Find the z-score:

nothing

(use 2 decimal places)

e. Find the probability:

nothing

(use 4 decimal places)

Jun 10, 2022

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