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A total cholesterol levels of...

A total cholesterol levels of a sample of men aged 35-44 are normally distributed with a mean of 203 milligrams per deciliter and a standard deviation of 38.3 milligrams per deciliter.

a. What percent of the men have a total cholesterol level less than 210 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 254 miligrams per deciliter of blood?

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