The blood cholesterol levels of men age 55 to 64 are approximately Normal, with mean 222 milligrams per deciliter (mg/dl) and standard deviation 37 mg/dl. A high cholesterol is above 240 mg/dl. What percent of men in this age bracket have high cholesterol? Round your answer to 1 decimal places.
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The z-score is calculated by subtracting the mean from the value and then dividing by the standard deviation. So, z = (240 - 222) / 37 = 0.486 Show more…
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