Aperson's blood glucose level 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. after a 12-hour fast, the random variable x will have a distribution that is approximately normal with mean m 85 and standard deviation s 25 (diagnostic tests with nursing implications, edited by s. loeb, springhouse press). note: after 50 years of age, both the mean and standard deviation tend to increase. what is the probability that, for an adult (under 50 years old) after a 12-hour fast,