Answered: Cancer prevention: Colonoscopy is a…

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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Cancer prevention: Colonoscopy is a medical procedure that is designed to find and remove precancerous lesions in the colon before they become cancerous. In a sample of 51,902 people without colorectal cancer, 6015 had previously had a colonoscopy, and in a sample of 9186 people diagnosed with colorectal cancer, 964 had previously had a colonoscopy. (a) Construct an 80% confidence interval for the difference in the proportions of people who had colonoscopies between those who were diagnosed with colorectal cancer and those who were not. Let Py denote the proportion of people without colorectal cancer who had colonoscopies and let P2 denote the proportion of people with colorectal cancer who had colonoscopies. Use the TI-84 Plus calculator and round the answers to three decimal places. An 80% confidence interval for the difference in the proportions of people who had colonoscopies between those who were diagnosed with colorectal cancer and those who were not is ___

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