Mari7e2eelingbabydor Mari7e2eelingbabydor

20-04-2017
Mathematics

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True or false: in building a confidence interval for a proportion you can cut the margin of error in half (from e to e/2 by doubling the sample size (from n to 2n.

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merrygoroundtheworld merrygoroundtheworld

20-04-2017

I think this is false. p +/- z*sqrt (pq/n) . Notice that the formula has sqrt of n.

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