Diastolic blood pressures are assumed to follow a normal distribution with a mean of 85 and standard deviation of 13.

Diastolic blood pressures are assumed to follow a normal distribution with a mean of 85 and standard deviation of 13.
A. What proportion of people have diastolic blood pressures less than 90?
B. What proportion have diastolic blood pressures between 80 and 90?
C. Of someone has a diastolic blood pressure of 100, what percentile does this represent?

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