3.14 Find the SD: Find the standard deviation of the distribution in the following situations. (Keep 1 decimal place.) a) MENSA is an organization whose members have IQs in the top 2% of the population. le are normally distributed with mean 102, and the minimum IQ score required for admission to MENSA is 133. l l b) Cholesterol levels for women aged 20 to 34 follow an approximately normal distribution with mean 184 milligrams per deciliter (mg/d1). Women with cholesterol levels above 219 mg/dl are considered to have high cholesterol and about 18.5% of women fall into this category