A group of doctors published an article in the New England Journal of Medicine. In the article they revealed ne findings ofa study to determine if there is a difference in survival rates for men who undergo surgery for ocalized ssigned 731 men with localized prostate cancer to radical prostatectomy or observation. During the years of ollow-up, 245 of 367 (66.8%) assigned to surgery survived for at least 5 years and 223 of 364 men (61.3%) ssigned to observation survived for at least 5 prostate cancer and those who are treated with observation only. The researchers randomly years. a) Construct and interpret a 99% confidence interval for the difference in the true proportion of men like these that would survive for at least 5 years after receiving surgery and the proportion that would survive for at least 5 years when only being observed. b) Does the confidence interval provide convincing evidence that the true proportions differ? Justify your answer.

A group of doctors published an article in the New England Journal of Medicine. In the article they revealed ne findings ofa study to determine if there is a difference in survival rates for men who undergo surgery for ocalized ssigned 731 men with localized prostate cancer to radical prostatectomy or observation. During the years of ollow-up, 245 of 367 (66.8%) assigned to surgery survived for at least 5 years and 223 of 364 men (61.3%) ssigned to observation survived for at least 5 prostate cancer and those who are treated with observation only. The researchers randomly years. a) Construct and interpret a 99% confidence interval for the difference in the true proportion of men like these that would survive for at least 5 years after receiving surgery and the proportion that would survive for at least 5 years when only being observed. b) Does the confidence interval provide convincing evidence that the true proportions differ? Justify your answer.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 10CYU

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