A Person's Level of Blood Glucose and Diabetes Are Closely $\mu$

Multiple Choice

A person's level of blood glucose and diabetes are closely related. Let x be a random variable measured in milligrams of glucose per deciliter (1/10 of a liter) of blood. Suppose that after a 12-hour fast, the random variable x will have a distribution that is approximately normal with mean $\mu$ = 78 and standard deviation of $\sigma$ = 25. What is the probability that, for an adult after a 12-hour fast, x is more than 49?

A) 0.438
B) 0.188
C) 0.062
D) 0.377
E) 0.877