The total blood cholesterol levels in a certain Mediterranean population are found to be normally distributed with a mean of 160 milligram/deciliter (mg/dL) and a standard deviation of 60 mg/dL. Find the proportion of this population who have blood cholesterol levels more than 140 mg/dL. Round your answer to four decimal places.
Added by Jessica C.
Step 1
To do this, we will use the standard normal distribution (Z-distribution) by converting the given value (140 mg/dL) into a Z-score. Show more…
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