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How does the decrease in confidence affect the sample size

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Reference no: EM132142345

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?

Reference no: EM132142345

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