Question

A persons blood glucose level and diabetes are closely related. Let x be a random variable measured in milligrams of glucose per decileter(1/10 of a liter.) of blood. Suppose that after a 12- hour fast, the random the random variable x will have a distribution that is approximately normal with mean=100 and standard deviation=20. Note: after 50 years of age, both the mean and standard deviation tend to increase. For an adult (under 50) after a 12- hour fast, find the following probabilites.( roumd your answers to four decimal places.)

a.) x is more than 80

b.) x is less than 120

c.) x is between 80 andd 120

d.) x is greater than 140

Answer 1