The decision support system analyst has been asked to prepare
an estimate of the percentage of time that a lab technician spends on
microscopic examination of blood cultures, with a 95.5 percent
confidence level. Past experience indicates that the proportion will be
25 percent.
. What sample size would be appropriate to have an error of no
more than 4 percent?
. If a sample of three hundred is used, what would be the potential
error for the estimate?
