Surgical complications: A medical researcher wants to construct a 99.5% confidence interval for the proportion...

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Surgical complications: A medical researcher wants to construct a 99.5% confidence interval for the proportion of knee replacement surgeries that result incomplications.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 isneeded so that the confidence interval will have a margin of error of 0.047A sample of 278 operations is needed to obtain a 99.5% confidence interval with a margin of error ofPart: 1 / 2Part 2 of 20.04 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 noestimate of P is available.3

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