Question: You plan to build a 99% confidence interval estimate of a population proportion. You want the interval to be no wider than + .05. You

You plan to build a 99% confidence interval estimate of a population proportion. You want the interval to be no wider than + .05. You have no information about the value of.
a. How big a sample would be appropriate?
b. Suppose a pilot sample had given .2 as an estimate of the population proportion. Using this estimate, what would be the recommended sample size? Comment on how this sample size compares to the one in part a.

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