Approximate variance of the log of the odds ratio
Use the delta methold to show that an approximate variance of the log of the odds ratio is 1/a + 1/b + 1/c + 1/d.
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Find the k that will minimize the expected number of test
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39% percent of households say they would feel secure if they had $50,000 dollars in savings. you randomly select 8 households and ask them if they would feel secure if they had $50,000 dollars in savings.
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