Statistics
posted by Alex on .
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 12hour fast, the random variable x will have a distribution that is approximately normal with mean of 74 and standard deviation of 29. What is the probability that, for an adult after a 12hour fast, x is more than 37? haveing trouble with the formula and finding the answer, please help

Z = (score  mean)/SD
Z = (3774)/29 = 1.28
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion for that Z score. 
Dont know

A person'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. Suppose that after a 12hour fast, the random variable x will have a distribution that is approximately normal with mean μ = 89 and standard deviation σ = 26. Note: After 50 years of age, both the mean and standard deviation tend to increase. For an adult (under 50) after a 12hour fast, find the following probabilities. (Round your answers to four decimal places.)
(a) x is more than 60
(b) x is less than 110
(c) x is between 60 and 110
(d) x is greater than 140 (borderline diabetes starts at 140)