1. If you want to be 95% confident of estimating the population proportion to within a sampling error of 0.05

and there is historical evidence that the population proportion is approximately 0.36, what sample size isneeded?

A sample size ____ is needed.

2. If you want to be 95% confident of estimating the population mean to within a sampling error of 6

and the standard deviation is assumed to be 18, what sample size isrequired?

The sample size required is ______.