Smekio study reported in The Lancet, Mercie et al, investigated the efficacy of and safety of varenicline forOs ng cessation in people living with HIV The study was a randomized, double-blind, placebo-controlled trial.the 124 bjects treated with varenicline, 18 abstained from smoking for the entire 48-week study period. Ofie 124 subjects assigned to the placebo group & abstained from smoking for the entire study periIod.Signmicantly greater than that of the placebo group Use a significance level of a = 0.01.I.State your hypothesesII. State the allowable type I error rate (a)III.Calculate your test statistic, the p-value and draw the physical representation of the p-valueIV.Make your decision to either reject the null or fail to reject the null.V.Make a concluding statement.b) Run a 99% confidence interval for the hypothesis test above. Don't forget to make a proper conclusion.

a) I. Denote p1, p2 as the true proportion people, who abstained from smoking for varenicline…

Answered: 2018 study reported in 7The Lancet.…

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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An airline company is interested in improving customer satisfaction rate from the 50% currently claimed. The company sponsored a survey of 122 customers and found that 72 customers were satisfied. What is the test statistic z? What is the p-value? Does sufficient evidence exist that the customer satisfaction rate is higher than the claim by the company at a significance level of a=0.01?
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