The serum cholesterol levels of 12- to 14-year-olds follow a normal distribution with mean 155 mg/dl and

Question:

The serum cholesterol levels of 12- to 14-year-olds follow a normal 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?
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...