E Question 6 of 7 (1 point) | Question Attempt: 1 of Unlimited Passion Es 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 14% 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 0.08? A sample of 149 operations is needed to obtain a 99.5% confidence interval with a margin of error of 0.08 using the estimate 0.14 for p. Part: 1 / 2 Part 2 of 2 (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 0.08 when no X 5 estimate of p is available. Check