It’s hard for smokers to quit. Perhaps prescribing a drug to fight depression will work as well as the usual nicotine patch. Perhaps combining the patch and the drug will work better than either treatment alone. Here are data from a randomized, double-blind trial that compared four treatments. A “success” means that the subject did not smoke for a year following the beginning of the study.TreatmentSubjectsSuccessesNicotine Patch24440Drug24474Patch plus Drug24587Placebo16025A. Summarize the data in a two-way table SuccessesFailuresNicotine Patch Drug Patch plus Drug Placebo B. Calculate the proportion of subjects who refrain from smoking in each of the four groups.C. Explain in words what the null hypothesis Ho: p1=p2=p3=p4 says about subjects’ smoking habits.D. Give the alternative hypothesis.E. Find the expected counts if Ho is true and display them in a two way table.F. Find the 8 contributors to and then add them together to getG. What term contributes the most toH. Find the p-value of the test.I. Give the result of the test at .J. What conclusion would you draw from the test?

Given data, Treatment Subjects Successes Nicotine patch 244 40 Drug 244 74 Patch plus drug…

Answered: It’s hard for smokers to quit. Perhaps…

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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It’s hard for smokers to quit. Perhaps prescribing a drug to fight depression will work as well as the usual nicotine patch. Perhaps combining the patch and the drug will work better than either treatment alone. Here are data from a randomized, double-blind trial that compared four treatments. A “success” means that the subject did not smoke for a year following the beginning of the study.

Treatment	Subjects	Successes
Nicotine Patch	244	40
Drug	244	74
Patch plus Drug	245	87
Placebo	160	25

A. Summarize the data in a two-way table

	Successes	Failures
Nicotine Patch
Drug
Patch plus Drug
Placebo

B. Calculate the proportion of subjects who refrain from smoking in each of the four groups.

C. Explain in words what the null hypothesis Ho: p₁=p₂=p₃=p₄ says about subjects’ smoking habits.

D. Give the alternative hypothesis.

E. Find the expected counts if Ho is true and display them in a two way table.

F. Find the 8 contributors to and then add them together to get

G. What term contributes the most to

H. Find the p-value of the test.

I. Give the result of the test at .

J. What conclusion would you draw from the test?

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