In: Statistics and Probability
1. in a recent study, the centers for disease and control centers reported that diastolic blood pressures of adult women in the united states are approximately normally distributed with a mean of 80.1 and a standard deviation of 9.5.
a) what proportion of women have blood pressures lower then 62?
b) what proportion of women have blood pressures between 69 and 87?
c) a dialostic blood pressure greater than 90 is classified as hypertension (high blood pressure), what porportion of women have hypertension?
d) is it unusual for a women to have blood pressure lower then 63?
round your answer to four decimal places.
2. the mean serum cholesterol levels for united states adults was 203, with the standard deviation of 42. a simple random sample of 109 adults were chosen. use the ti 84 calculator. round the answers to four decimal places.
a) what is the probability that the sample mean cholesterol levels is greater than 213.
b) what is the probability that the sample mean cholesterol levels is between 191 and 201 is:
c) would it be unusual for the sample mean to be less then 191?
it would be unusual or usual since the probability is:
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