1. In an election poll voters must choose between Jenny Blueshoes and Jimmy Redshoes. The poll found that out of 1,938 voters 1,167 of them plan on voting for Jenny Blueshoes.

Suppose the campaign manager wants to estimate the population proportion with a margin of error of 0.027 at 95% confidence.

How large a sample size is needed to meet the required precision?(A previous sample of similar units yielded 1,167/1,938 for the sample proportion.)

ROUND TO TWO DECIMALS (EVEN THOUGH IT DOESN'T MAKE SENSE)

A previous study that investigated the out of pocket cost (after insurance) of having a child at a hospital in the United States found a mean cost of approximately $1,194 for the entire stay with a population standard deviation of $122.

Suppose the project director wants an estimate of the population mean birthing cost such that there is a .95 probability that the sampling error is $23 or less.

How large a sample size is needed to meet the required precision?

ROUND TO TWO DECIMALS (EVEN THOUGH IT DOESN'T MAKE SENSE)