8.31 In a study to compare the perceived effects of two pain relievers, 200 randomly selectedadults were given the first pain reliever, and 93% indicated appreciable pain relief. Of the 450individuals given the other pain reliever, 96% indicated experiencing appreciable relief.a Give an estimate for the difference in the proportions of all adults who would indicateperceived pain relief after taking the two pain relievers. Provide a bound on the error ofestimation.b Based on your answer to part (a), is there evidence that proportions experiencing reliefdiffer for those who take the two pain relievers? Why?

Answered: Image /qna-images/answer/1fcc757c-3b80-4457-a3b9-a213488be250.jpg

Answered: 1 In a study to compare the perceived…

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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What is the SE of Difference and What is the t-score (obtained)?
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a survey is conducted to compare the proportions of men and women whoaccess their bank statements online. Denoting the population propotions by Pm and Pw, a two-proportion z-test is carried out to test Ho: pm = pw against Ha: pm > pw. The values of the test statistic is found to be z = 0.784, and the p-value for the test is found to be 0.216. Which of the following is the correct interpretation of the p-value? a) given that ha is true, the probability of getting a value of z at least as large as 0.784 is 0.216. b) given the results of the survey, the probability that Pm > Pw is 0.216. c) given the results of the survey, the probability that Pm = Pw is 0.216. d) none of the above
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