Among females in a country between 18 and 74 years of age, diastolic blood pressure is normally distributed with mean 77 mm Hg and standard deviation 11.6 mm Hg.
(a) What is the probability that a randomly selected woman has a diastolic blood pressure less than 60 mm Hg?
(b) What is the probability that she has a diastolic blood pressure greater than 90 mm Hg?
(c) What is the probability that the woman has a diastolic blood pressure between 60 and 90 mm Hg?
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)120/80 mm of Hg
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