Mathematics, 30.03.2020 17:50 miracle9704
According to a recent poll, 29% of adults in a certain area have high levels of cholesterol. They report that such elevated levels "could be financially devastating to the regions healthcare system" and are a major concern to health insurance providers. According to recent studies, cholesterol levels in healthy adults from the area average about 205 mg/dL, with a standard deviation of about 30 mg/dL, and are roughly Normally distributed. If the cholesterol levels of a sample of 42 healthy adults from the region is taken, answer parts (a) through (d).
(a) What is the probability that the mean cholesterol level of the sample will be no more than 205? P(y s 205)-(Round to four decimal places as needed.)
(b) What is the probability that the mean cholesterol level of the sample will be between 200 and 210? P(200 <-<210)= â–¡ (Round to four decimal places as needed.)
(c) What is the probability that the mean cholesterol level of the sample will be less than 195? P(y <195)(Round to four decimal places as needed.)
(d) What is the probability that the mean cholesterol level of the sample will be greater than 217? P(y > 217)Round to four decimal places as needed.)
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