Surgical complications: A medical researcher wants to construct a 90% confidence interval for the proportion of knee replacement surgeries that result in complications. (a) An article in a medical journal suggested that approximately 10% 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 0.04? (b) Estimate the sample size needed if no estimate of p is available.
Surgical complications: A medical researcher wants to construct a 90% confidence interval for the proportion of knee replacement surgeries that result in complications. (a) An article in a medical journal suggested that approximately 10% 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 0.04? (b) Estimate the sample size needed if no estimate of p is available.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Surgical complications: A medical researcher wants to construct a 90% confidence interval for the proportion of knee replacement surgeries that result in complications.
(a) An article in a medical journal suggested that approximately 10% 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 0.04?
(b) Estimate the sample size needed if no estimate of p is available.
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