A. For a population with μ = 62 and σ = 12, find the X value...

A.

For a population with μ = 62 and σ = 12, find the X value that corresponds to each of the following z-scores.

z = −0.25
z = −1.50
z = 0.50
z = 2.00

B. 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 12-hour fast, the random variable x will have a distribution that is approximately normal with mean μ = 88 and standard deviation σ = 24. 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 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 125 (borderline diabetes starts at 125)

Expert Solution

orchestra answered 2 years ago

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