(Answered) The total cholesterol level of us females 2 years old or

Statistics

The total cholesterol level of US females 2 years old or older is normally distributed with a mean of 206 mg/dl and a standard deviation of 44.7
a. determine the percentage of US females 20 years old or older who have a serum total cholesterol level between 1150 mg/dl and 250 mg/dl
b. determine the percentage of US females 20 years old or older who have a serum total cholesterol level below 220 mg/dl
c. obtain and interpret the quartiles for serum total cholesterol level of US females 20 years old or older
d. find the and interpret the fourth decile for serum total cholesterol level of US females 20 years old or older

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