Surgical complications: A medical researcher wants to construct a 99.8% confidence interval for the proportion of knee replacement surgeries that result in complications. Part: 0 / 2 Part 1 of 2 (a) An article in a medical journal suggested that approximately 5% 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? A sample of operations is needed to obtain a 99.8% confidence interval with a margin of error of 0.05 using the estimate 0.05 for p. X S

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A: fo fe (fo-fe)2/fe Winter 42 45 0.2 Spring 46 45 0.022222 Summer 54 45 1.8 Fall 38 45…

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A: Given information: x=16, n=60p=16=0.166666666667≈0.1667p^=xn=1660=0.2666667≈0.2667

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