20059.135 Kicking the cigarette habit. Can taking an antidepressantdrug help cigarette smokers kick their habit? The NewEngland Journal of Medicine (Oct. 23, 1997) published astudy in which 615 smokers (all of whom wanted to give upsmoking) were randomly assigned to receive either Zyban(an antidepressant) or a placebo (a dummy pill) for sixweeks. Of the 309 patients who received Zyban, 71 were notsmoking one year later. Of the 306 patients who received aplacebo, 37 were not smoking one year later. Conduct a testof hypothesis (at a =posed in the first sentence of this exercise.9.138.05) to answer the research question а.State the null and alternative hypotheses.b. Use Minitab to test the hypotheses. Report the test statistic and the p value.c. State your conclusion.

a. Null Hypothesis: H0: There is no difference in the proportions of not smoking one year later…

Answered: 9.135 Kicking the cigarette habit. Can…

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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Similar questions

What is meant by the sample space of an experiment?
In a controlled laboratory experiment, scientists at the University of Minnesota discovered that 25% of a certain strain of rats subjected to a 20% coffee bean diet and then force-fed a powerful cancer-causing chemical later developed cancerous tumors. Would we have reason to believe that the proportion of rats developing tumors when subjected to this diet has increased if the experiment were repeated and 16 of 48 rats developed tumors? Use a 0.05 level of significance.
Do well-rounded people get fewer colds? A study on the Chronicle of Higher Education was conducted by scientist at Carnegie Mellon University, the University of Pittsburgh and the University of Virginia. They found that people who have only a few social outlets get more colds than those who are involved in a variety of social activities. Suppose that of the 276 healthy men and women tested, n1=96 had only a few social outlets and n2=105 were busy with six or more activities. When these people were exposed to a cold virus, the following results were observed: Construct a 99% confidence interval for the difference in the two population proportions.
Although there is a popular belief that herbalremedies such as Ginkgo biloba and Ginseng mayimprove learning and memory in healthy adults,these effects are usually not supported by wellcontrolled research (Persson, Bringlov, Nilsson,and Nyberg, 2004). In a typical study, a researcherobtains a sample of n = 16 participants and has eachperson take the herbal supplements every day for90 days. At the end of the 90 days, each person takesa standardized memory test. For the general population, scores from the test form a normal distributionwith a mean of μ = 50 and a standard deviation ofσ = 12. The sample of research participants had anaverage of M = 54.a. Assuming a two-tailed test, state the null hypothesis in a sentence that includes the two variablesbeing examined.b. Using the standard 4-step procedure, conduct atwo-tailed hypothesis test with α = .05 to evaluatethe effect of the supplements.

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9.135 Kicking the cigarette habit. Can taking an antidep drug help cigarette smokers kick their habit? The New England Journal of Medicine (Oct. 23, 1997) published a study in which 615 smokers (all of whom wanted to give up smoking) were randomly assigned to receive either Zyban