A doctor wants to estimate the HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the HDL cholesterol within 4 points with 99% confidence assuming sigma equals 12.8 question mark Suppose the doctor would be content with 95% confidence. How does the decrease in confidence affect the sample size required?
A 99% confidence level requires __ subjects. (Round up to the nearest whole number as needed.)
Sample Size for 99% CI, E = 4 and ? = 12.8
Confidence level = 99% and Desired Margin of Error, E = 4.
Minimum sample size is given by:
x ? µ| < E) ? 1 ? ? ? P ( ?...
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Oct 14, 2020EXPERT
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