In a random sample of 70 patients undergoing a standard surgical procedure, 16 required medication for postoperative pain. In a random sample of 85 patients undergoing a new procedure, only 17 required medication. Construct a 98% confidence interval for the difference in the proportions of patients needing pain medication between the old and new procedures. Interpret the results. A physician claims that the proportion of patients who need pain medication is the same for both procedures. Does the confidence interval contradict the claim?

In a random sample of 70 patients undergoing a standard surgical procedure, 16 required medication for postoperative pain. In a random sample of 85 patients undergoing a new procedure, only 17 required medication. Construct a 98% confidence interval for the difference in the proportions of patients needing pain medication between the old and new procedures. Interpret the results. A physician claims that the proportion of patients who need pain medication is the same for both procedures. Does the confidence interval contradict the claim?

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section: Chapter Questions

Problem 8SGR

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