According to the national health and nutrition examination survey, published by the national center for health statistics, the serum total cholesterol love of us females 20 years old or older is normally distributed witha mean of 20g mg/dL and a standard deviation of 55.7 mg/dL
A determine the percentage of us females 20 years old or older who have a serum total cholesterol level between 150 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 intterpret the quartiles for serum total cholesterol level of us females 20 years or older
d. Find and interpret the fourth decile for serum total cholesterol level of us females 20 years old or older