Mari7e2eelingbabydor Mari7e2eelingbabydor
  • 20-04-2017
  • Mathematics
contestada

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 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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