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Problem 5 Sample Size for a Confidence Interval for Two Independent Samples Dichotomous Outcome An investigator wants to estimate the impact of smoking on the incidence of prostate cancer The incidence of prostate cancer by the age of 70 is about 1 in 6 (17%) Pz =0. 1 U.S. study reported that heavy smokers had twice the risk of developing prostate cancer as compared to nonsmokers (34%) P6.34 Repeat study in England, cohort enrolls men at age 50 and followed them for 30 years Want to generate a 95% confidence level, assume a 20% attrition, and a margin of error of no more than 0.05 (5%) EFO.0S

Problem 5 Sample Size for a Confidence Interval for Two Independent Samples Dichotomous Outcome An investigator wants to estimate the impact of smoking on the incidence of prostate cancer The incidence of prostate cancer by the age of 70 is about 1 in 6 (17%) Pz =0. 1 U.S. study reported that heavy smokers had twice the risk of developing prostate cancer as compared to nonsmokers (34%) P6.34 Repeat study in England, cohort enrolls men at age 50 and followed them for 30 years Want to generate a 95% confidence level, assume a 20% attrition, and a margin of error of no more than 0.05 (5%) EFO.0S

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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Problem 5

Problem 5 Sample Size for a Confidence Interval for Two Independent Samples Dichotomous Outcome An investigator wants to estimate the impact of smoking on the incidence of prostate cancer The incidence of prostate cancer by the age of 70 is about 1 in 6 (17%) Pz =0. 1 U.S. study reported that heavy smokers had twice the risk of developing prostate cancer as compared to nonsmokers (34%) P6.34 Repeat study in England, cohort enrolls men at age 50 and followed them for 30 years Want to generate a 95% confidence level, assume a 20% attrition, and a margin of error of no more than 0.05 (5%) EFO.0S
Transcribed Image Text:Problem 5 Sample Size for a Confidence Interval for Two Independent Samples Dichotomous Outcome An investigator wants to estimate the impact of smoking on the incidence of prostate cancer The incidence of prostate cancer by the age of 70 is about 1 in 6 (17%) Pz =0. 1 U.S. study reported that heavy smokers had twice the risk of developing prostate cancer as compared to nonsmokers (34%) P6.34 Repeat study in England, cohort enrolls men at age 50 and followed them for 30 years Want to generate a 95% confidence level, assume a 20% attrition, and a margin of error of no more than 0.05 (5%) EFO.0S
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