Too much cholesterol in the blood increases the risk of heart disease. The cholesterol levels of young women age 20 to 34 have an approximate Normal distribution with mean 185 milligrams per deciliter...

Too much cholesterol in the blood increases the risk of heart disease. The cholesterol levels of young women age 20 to 34 have an approximate Normal distribution with mean 185 milligrams per deciliter (mg/dL) and standard deviation 39 mg/dL.