The serum cholesterol levels of 12- to 14-year- olds follow a normal distribution with mean 155 mg/dl and standard deviation 27 mg/dl. What percentage of 12 to 14-year-olds have serum cholesterol values ?
a) 164 or more?
b) 137 or less?
c) 186 or less?
d) 100 or more?
e) Between 159 and 186?
f) Between 100 and 132?
g) Between 132 and 159?