For 14-year-old boys, the distribution of blood cholesterol

Last updated: 8/5/2022

For 14-year-old boys, the distribution of blood cholesterol is approximately Normal with mean µ=170 milligrams of cholesterol per deciliter of blood (mg/dL) and standard deviation o = 30 mg/dL. According to the 68-95-99.7 Rule, what percent of 14-year-old boys have cholesterol between 110 and 140? 13.5% 27% 95% 68%