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Out of 67,410 surgeries tracked in a study in the U.K., 2832 were followed by surgical site infections (Coello et al. 2005). a. What is a 95% confidence interval for the proportion of surgeries followed by surgical site infection in the U.K.? b. Assume that the data are a random sample. If the study had followed a total of only 674 surgeries from the same population, would the confidence interval have been wider or narrower?

Out of 67,410 surgeries tracked in a study in the U.K., 2832 were followed by surgical site infections (Coello et al. 2005). a. What is a 95% confidence interval for the proportion of surgeries followed by surgical site infection in the U.K.? b. Assume that the data are a random sample. If the study had followed a total of only 674 surgeries from the same population, would the confidence interval have been wider or narrower?

MATLAB: An Introduction with Applications
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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Out of 67,410 surgeries tracked in a study in the U.K., 2832 were followed by surgical site infections (Coello et al. 2005).


a. What is a 95% confidence interval for the proportion of surgeries followed by surgical site infection in the U.K.?

b. Assume that the data are a random sample.
If the study had followed a total of only 674 surgeries from the same population, would the confidence interval have been wider or narrower?

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