Pain after surgery: In a random sample of 53 patients undergoing a standard surgical procedure, 25 required medication for postoperative pain. In a rando- sample of 89 patients undergoing a new procedure, only 10 required pain medication. Part: 0/ 2 Part 1 of 2 (a) Construct a 99.5% confidence interval for the difference in the proportions of patients needing pain medication between the old and new procedures. Let P, denote the proportion of patients who had the old procedure needing pain medication and let p, denote the proportion of patients who had the new procedure needing pain medication. Use the TI-84 Plus calculator and round the answers to three decimal places. A 99.5% confidence interval for the difference in the proportions of patients needing pain medication between the old and
Pain after surgery: In a random sample of 53 patients undergoing a standard surgical procedure, 25 required medication for postoperative pain. In a rando- sample of 89 patients undergoing a new procedure, only 10 required pain medication. Part: 0/ 2 Part 1 of 2 (a) Construct a 99.5% confidence interval for the difference in the proportions of patients needing pain medication between the old and new procedures. Let P, denote the proportion of patients who had the old procedure needing pain medication and let p, denote the proportion of patients who had the new procedure needing pain medication. Use the TI-84 Plus calculator and round the answers to three decimal places. A 99.5% confidence interval for the difference in the proportions of patients needing pain medication between the old and
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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Transcribed Image Text:Pain after surgery: In a random sample of 53 patients undergoing a standard surgical procedure, 25 required medication for postoperative pain. In a random
sample of 89 patients undergoing a new procedure, only 10 required pain medication.
Part: 0 / 2
Part 1 of 2
(a) Construct a 99.5% confidence interval for the difference in the proportions of patients needing pain medication between the old and new procedures.
Let p, denote the proportion of patients who had the old procedure needing pain medication and let p, denote the proportion of patients who had the new
procedure needing pain medication. Use the TI-84 Plus calculator and round the answers to three decimal places.
A 99.5% confidence interval for the difference in the proportions of patients needing pain medication between the old and
new procedures is <p,-P2<.
园
Part 2 of 2
(b) A physician claims that the proportion of patients who need pain medication is the same for both procedures. Does the confidence interval contradict
this claim?
Because the confidence interval (Choose one)
who need pain medication is the same for both procedures, contradicts
v 0, it (Choose one)
the claim that the proportion of patients
does not contradict
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