Total cholesterol in children aged 10-15 is assumed to follow a normal distribution with a mean of 191 and a standard deviation of 22.4.
A. What proportion of children 10-15 years of age has total cholesterol between 180 and 190?
B.What proportion of children 10-15 years of age would be classified as hyperlipidemic (Assume that hyperlipidemia is defined as a total cholesterol level over 200)?
C.What is the 90th percentile of cholesterol?