Use a Z score chart to answer the question. Note: Round z-scores to the nearest hundredth and then find the required answer The cholesterol levels of a group of young women at a university are normally distributed, with a mean of 181 and a standard deviation of 39. What percent of young women have the following cholesterol levels? (Round your answers to one decimal place.)

(a) greater than 216

b) between 186 and 223