Posted by **Mark Riverside** on Saturday, June 7, 2014 at 6:55pm.

5. A person’s blood glucose level and diabetes are closely. X is a random variable that measures the milligrams of glucose per deciliter of blood. After a 12 hour fast, x has an approximate normal distribution with a mean of 85 and a standard deviation of 25. What is the probability in a. through d) that :

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)?

e. What would the minimum X value for blood glucose be if someone ranked in the highest 25% for blood glucose level?

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