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Experts consider high serum cholesterol levels to be associated with an increased incidence of coronary heart disease. Suppose that the natural logarithm of cholesterol levels for males in a given age bracket is normally distributed with amean of 5.35 and a standard deviation of .12.

a. What percentage of the males in this age bracket could be expected to have a serum cholesterol level greater than 250 mg/ml, the upper limit of the clinical normal range?

b. Based on your answer to part (a), does it appear the ad was successful? Explain.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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