(Answered) Doctor wants the estimate the hdl cholesterol of all 20 to

Statistics

Doctor wants the estimate the HDL cholesterol of all 20 to 29 year old females. How many subjects are needed to estimate the HDL cholesterol within 3 points with 99% confidence assuming o=18.2? Suppose the doctor would be content with 95% confidence. How does the decrease in confidence affect the sample size?

A 99% confidence level requires how many subjects?

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