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Check your blood pressure: In a recent study, the Centers for Disease Control and Prevention reported...

Check your blood pressure: In a recent study, the Centers for Disease Control and Prevention reported that diastolic blood pressures of adult women in the United States are approximately normally distributed with mean 80.9 and standard deviation 10.3.

(a) What proportion of women have blood pressures lower than 70?

(b) What proportion of women have blood pressures between 71and 91?

(c) A diastolic blood pressure greater than 90 is classified as hypertension (high blood pressure). What proportion of women have hypertension?

(d) Is it unusual for a woman to have a blood pressure lower than 63?

Round the answers to four decimal places.

Math   Statistics-And-Probability   
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