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###### 11. Serum cholesterol of 16 to 19 year old females approximately normally distributed with mean 171 and standard deviation 40 a. Determine the proportion of 16-19-year-old females having serum cholesterol level between 150 and 200.b. Suppose a 16-19 year old female is randomly selected. Find the probability her serum cholesterol is less than 140.Determine the serum cholesterol that divides the bottom 10% from the top 90% of all serum cholesterol levels of 16-19 year old females:National Center f

11. Serum cholesterol of 16 to 19 year old females approximately normally distributed with mean 171 and standard deviation 40 a. Determine the proportion of 16-19-year-old females having serum cholesterol level between 150 and 200. b. Suppose a 16-19 year old female is randomly selected. Find the probability her serum cholesterol is less than 140. Determine the serum cholesterol that divides the bottom 10% from the top 90% of all serum cholesterol levels of 16-19 year old females: National Center for Health Statistics, 25th percentile of serum d_ According to 16-19 year old females is 145. How close is the 25th percentile cholesterol for of the normal curve to the above reported value?

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