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Author Question: For a particular age group of adult females, the distribution of cholesterol readings, in mg/dl, is ... (Read 74 times)

stevenposner

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on: Jul 24, 2018
For a particular age group of adult females, the distribution of cholesterol readings, in mg/dl, is normally distributed with a mean of 180 and a standard deviation of 12. What percentage would have readings less than 156?

Question 2

For a particular age group of adult females, the distribution of cholesterol readings, in mg/dl, is normally distributed with a mean of 180 and a standard deviation of 12. What percentage of this population would have readings exceeding 210?


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ladyjames123

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Reply #1 on: Jul 24, 2018
Answer to Question 1

P(x < 156) = P(z < -2) = 0.5000  0.4772 = 0.0228 or 2.28

Answer to Question 2

P(x > 210) = P(z > 2.5) = 0.5000  0.4938 = 0.0062, or 0.62


stevenposner

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Reply #2 on: Jul 24, 2018
TY


ladyjames123

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Reply #3 on: Jul 24, 2018
You're welcome


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