A medical researcher wants to construct a 95% confidence interval for the proportion of knee replacement surgeries that result in complications. A journal article suggested that approximately 6% of...

A medical researcher wants to construct a 95% confidence interval for the proportion of knee replacement surgeries that result in complications. A journal article suggested that approximately 6% of such operations result in complications. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.05?