SOLUTION: Hi! Please help! The distribution of cholesterol levels in teenage boys is approximately normal with a mean= 170 and standard deviation= 30.Levels above 200 warrant attention.

Question 1179031: Hi! Please help!
The distribution of cholesterol levels in teenage boys is approximately normal with a mean= 170 and standard deviation= 30.Levels above 200 warrant attention. If 95 teenage boys are examined, how many would you expect to have cholesterol levels greater than 225?
Thank you so much!
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
approximately normal with a mean= 170 and standard deviation= 30
P(x > 225) = normalcdf(225,9999, 170,30) = .0334
95 teenage boys sample: .0334*95 = 3 (whole number)
expect 3 to have cholesterol levels > 225
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