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Question 90:



No answer provided yet.Use the Interactive graph of the standard normal curve. Since you want to know just the percent above 200, you’d use the one-tailed area (the second graph). Enter the mean (160) and standard deviation (30) in the boxes on the graph and hover over the graph until the x-value reaches 200, which is right around 1.34 standard deviations above the mean. You’ll then see that the area above this point (the white area) is around 8.98%. Or a little less than 9% of the population would have cholesterol above 200.

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