. Diastolic blood pressures are assumed to follow a normal distribution with a mean of 85 and a stan- dard deviation of 12. a. What proportion of people has diastolic blood pressures less than 90? b. What proportion has diastolic blood between 80 and 90? c. If someone has a diastolic blood pressure of 100, what percentile does this represent? Consider the data described in Problem 10. If 15 pressures participants are sampled, what is the probability that their mean diastolic blood pressure exceeds 907

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