Surgical complications: A medical researcher wants to

Last updated: 7/12/2022

Surgical complications: A medical researcher wants to construct a 99.5% confidence interval for the proportion of knee replacement surgeries that result in complications. Part 1 of 2 (a) An article in a medical journal 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 0.047 A sample of 278 operations is needed to obtain a 99.5% confidence interval with a margin of error of Part: 1 / 2 Part 2 of 2 0.04 using the estimate 0.06 for P. (b) Estimate the sample size needed if no estimate of p is available. A sample of operations is needed to obtain a 99.5% confidence interval with a margin of error of 0.04 when no estimate of P is available. 3