13. Treating circulatory disease: Angioplasty is a medical procedure in which an obstructed blood vessel is widened. In some cases, a wire mesh tube, called a stent, is placed in the vessel to help it remain open. A study was conducted to compare the effectiveness of a bare metal stent with one POLO that has been coated with a drug designed to prevent reblocking of the vessel. A total of 5320 patients received bare metal stents, and of these, 841 needed treatment for reblocking within a year. A total of 1120 received drug-coated stents, and 134 of them required treatment within a year. Can you conclude that the proportion of patients who needed retreatment is less for those who received drug-coated stents? Use the a= 0.05 level. 20.00
13. Treating circulatory disease: Angioplasty is a medical procedure in which an obstructed blood vessel is widened. In some cases, a wire mesh tube, called a stent, is placed in the vessel to help it remain open. A study was conducted to compare the effectiveness of a bare metal stent with one POLO that has been coated with a drug designed to prevent reblocking of the vessel. A total of 5320 patients received bare metal stents, and of these, 841 needed treatment for reblocking within a year. A total of 1120 received drug-coated stents, and 134 of them required treatment within a year. Can you conclude that the proportion of patients who needed retreatment is less for those who received drug-coated stents? Use the a= 0.05 level. 20.00
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:13. Treating circulatory disease: Angioplasty is a medical
procedure in which an obstructed blood vessel is widened. In
some cases, a wire mesh tube, called a stent, is placed in the
vessel to help it remain open. A study was conducted to
compare the effectiveness of a bare metal stent with one
that has been coated with a drug designed to prevent
reblocking of the vessel. A total of 5320 patients received
bare metal stents, and of these, 841 needed treatment for 3
reblocking within a year. A total of 1120 received drug-coated
stents, and 134 of them required treatment within a year. Can
you conclude that the proportion of patients who needed
retreatment is less for those who received drug-coated stents?
Use the a= 0.05 level. 20.0
DOY BO
Source: Canadian Medical Association Journal 180:167-174
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