PArt 1
Let x be a random variable that represents level of glucose in the blood (mg per deciliterof blood) a er a 12-hour fast. The glucose level is approximately normal with a mean of 85 and a standard deviation of 25.
a. What is the probability that a sample of 10 people have a mean glucose level less than 84.5?
b. What is the probability that a sample of 100 people have a mean glucose level less than 84.5?
