A what percent of the men have a total cholesterol level


The total cholesterol levels of a sample of men aged?35-44are normally distributed with a mean of 220 milligrams per deciliter and a standard deviation of 37.4 milligrams per deciliter.

?(a) What percent of the men have a total cholesterol level less than 235 milligrams per deciliter of ?blood?

?(b) If 256 men in the?35-44 age group are randomly?selected,about how many would you expect to have a total cholesterol level greater than 251 milligrams per deciliter of?blood?

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