Total cholesterol in children aged 10–15 years is assumed to follow a normal distribution with a mean of 191 and a standard deviation of 22.4. a. What proportion of children aged 10–15 years have total cholesterol between 180 and 190? b. What proportion of children aged 10–15 years would be classified as hyperlipidemic? Assume that hyperlipidemia is defined as a total cholesterol level over 200. c. What is the 90th percentile of cholesterol?

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  1. Total cholesterol in children aged 10–15 years is assumed to follow a normal distribution with a mean of 191 and a standard deviation of 22.4.

a. What proportion of children aged 10–15 years have total cholesterol between 180 and 190?

b. What proportion of children aged 10–15 years would be classified as hyperlipidemic? Assume that hyperlipidemia is defined as a total cholesterol level over 200.

c. What is the 90th percentile of cholesterol?

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