Richard\'s total cholesterol level is measured to be 135 milligrams per decilite

Question

Richard's total cholesterol level is measured to be 135 milligrams per deciliter (mg/dl). This level corresponds to a z-score of -1.94. Choose the correct interpretation of this z-score. A) Richard's total cholesterol level is 1.94 mg/dl below the mean cholesterol level of all men his age. B) Richard's total cholesterol level is 1.94 times the mean cholesterol level of all men his age. C) Richard's total cholesterol level is 1.94 standard deviations above the mean cholesterol level of all men his age. D) Richard's total cholesterol level is 1.94 mg/dl above the mean cholesterol level of all men his age. E) Richard's total cholesterol level is 1.94 standard deviations below the mean cholesterol level of all men his age.

Explanation / Answer

E) Richard's cholestrol level is 1.94 standard deviations below the mean cholestrol level of all men his age

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