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a. Are the variables considered as ordinal or interval data? Why? b. Which is the appropriate test procedure to use, paired wilcoxon signed rank test or student's t-test on paired samples? Why? c. Give the appropriate conclusion at 5% level of significance: At alpha = 0.05, ______.

a. Are the variables considered as ordinal or interval data? Why? b. Which is the appropriate test procedure to use, paired wilcoxon signed rank test or student's t-test on paired samples? Why? c. Give the appropriate conclusion at 5% level of significance: At alpha = 0.05, ______.

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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a. Are the variables considered as ordinal or interval data? Why?

b. Which is the appropriate test procedure to use, paired wilcoxon signed rank test or student's t-test on paired samples? Why?

c. Give the appropriate conclusion at 5% level of significance: At alpha = 0.05, ______.

CHEMOTHERAPY PROBLEM new chemotherapy treatment is proposed for patients with breast cancer. Researchers are concerned with patient's ability to tolerate the new treatment. Thus, they decided to assess their quality of life both before and after receiving the new chemotherapy treatment. Quality of life (QOL) is rated from 1 to 5 where 1=Poor, 2= Fair, 3=Good, 4= Very Good, 5 = Excellent. Consider the following result of the Paired Wilcoxon Signed Rank Test. %3D data: QOL before and QOL after V = 8, p-value = 0.04371 alternative hypothesis: true location shift is not equal to 0
Transcribed Image Text:CHEMOTHERAPY PROBLEM new chemotherapy treatment is proposed for patients with breast cancer. Researchers are concerned with patient's ability to tolerate the new treatment. Thus, they decided to assess their quality of life both before and after receiving the new chemotherapy treatment. Quality of life (QOL) is rated from 1 to 5 where 1=Poor, 2= Fair, 3=Good, 4= Very Good, 5 = Excellent. Consider the following result of the Paired Wilcoxon Signed Rank Test. %3D data: QOL before and QOL after V = 8, p-value = 0.04371 alternative hypothesis: true location shift is not equal to 0
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