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Total cholesterol levels for women under 30 in Podunk are normally distributed with mean 173 mg/dL...

Total cholesterol levels for women under 30 in Podunk are normally distributed with mean 173 mg/dL and standard deviation 27.2 mg/dL.

a. If a woman is selected at random, find the probability that her total cholesterol is higher than 180 mg/dL.

b. What cholesterol levels make up the top 70% of this distribution?

Math   Statistics-And-Probability   
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