The Distribution of Cholesterol Levels in Teenage Boys Is Approximately $\mu$

Multiple Choice

The distribution of cholesterol levels in teenage boys is approximately normal with $\mu$ = 170 and $\sigma$ = 30 (Source: U.S. National Center for Health Statistics) . Levels above 200 warrant attention. Find the probability that a
Teenage boy has a cholesterol level greater than 225.

A) 0.0336
B) 0.0606
C) 0.0718
D) 0.0012