Question

The total cholesterol levels of a sample of men aged 35-44 are normally distributed with a mean of 209 milligrams per deciliter and a standard deviation of 36.8 milligrams per deciliter. (a) What percent of the men have a total cholesterol level less than 233 milligrams per deciliter of blood? (b) If 259 men in the 35-44 age group are randomly selected, about how many would you expect to have a total cholesterol level greater than 257 milligrams per deciliter of blood? (a) The percent of the men that have a total cholesterol level less than 233 milligrams per deciliter of blood is (Round to two decimal places as needed.) (b) of the 259 men selected, would be expected to have a total cholesterol level greater than 257 milligrams per deciliter of blood. Round to the nearest integer as needed.)
Use the given confidence interval to find the margin of error and the sample mean (13.0,19.8) The sample mean is (Type an integer or a decimal.) The margin of error is (Type an integer or a decimal.)
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