Dr. Paul Oswiecmiski wants to estimate the mean serum HDL cholesterol of all 20- to 29-year-old males.
Question:
Dr. Paul Oswiecmiski wants to estimate the mean serum HDL cholesterol of all 20- to 29-year-old males. How many subjects are needed to estimate the mean serum HDL cholesterol of all 20-to 29-year-old males within 1.5 points with 90% confidence, assuming that s = 12.5 based on earlier studies?
Suppose that Dr. Oswiecmiski would prefer 95% confidence. How does the increase in confidence affect the sample size required?
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For 90 confidence 2 z 1645 and which we must increase to ...View the full answer
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Somshukla Chakraborty
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