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A doctor wants to estimate the HDL cholesterol of all20- to29-year-old females. How many subjects are needed to estimate the HDL cholesterol within 4 points
A doctor wants to estimate the HDL cholesterol of all20- to29-year-old females. How many subjects are needed to estimate the HDL cholesterol within 4 points with 99 % confidence assuming =14.5? Suppose the doctor would be content with 90 % confidence. How does the decrease in confidence affect the sample sizerequired?
A99% confidence level requires____subjects.
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