the american heart association recommends a daily cholestero

the american heart association recommends a daily cholesterol intake of less than 300 mg. here are the cholesterol amounts in a random sample of single servings of grilled meats. estimate the standard deviation in cholesterol with 95% confidence. assume the variable to be normally distributed. 90, 85, 100, 200 70, 225, 80, 105, 115, 130, 95, 110, 145