Researchers found 400 current smokers to volunteer for a study in which each was randomly assigned to one of three treatment groups. Group 1 received an electronic cigarette (e-cig) in whicheach cartridge contained 7.2 mg of nicotine, Group 2 received an e-cig that contained 5.4 mg of nicotine, and Group 3 received an e-cig that contained no nicotine. The subjects did not know whichgroup they were assigned. During the course of the intervention, subjects dropped out of the study. At the end of the study 82 subjects remained in Group 1, 77 in Group 2, and 69 in Group 3.Results as to whether the subject quit smoking entirely are available below. Complete parts (a) through (g).Click here to see the results of the study.(a) What type of experimental design was used in this study?Smokers in the studyFormer smokersCurrent smokerse-Cig SmokersVisScreen Shot 202...i QGroup 1 Group6512A. This is an observational study, not a designed experiment.B. A completely randomized design with two levels of treatmentC. A matched-pairs design with two levels of treatmentD. A completely randomized design with three levels of treatment(b) Researchers wanted to know whether electronic cigarettes may be used to help individuals abstain from cigarette smoking. What is the response variable? Is it qualitative or quantitative?The response variable(c) To what population do the results of this study apply?Did Not Quit 6715QuitGroup 3636 (d) State the null and alternative hypotheses.O A. Ho: P₁ = P2 = P3H₁: At least one of the proportions is different from the others.O B. Ho: Quitting and group are independent.H₁: Quitting and group are dependent.O C. Ho: O₁ = E₁ and O₂ = E₂ and O3 = E3H₁:0₁ # E₁ or 02 # E2 or 03 #E3O D. Ho: P₁P2 = P3H₁: P₁ P₂ P3(e) Does the evidence suggest e-cigs are effective in helping individuals abstain from cigarette smoking? Use α = 0.1.Compute the value of the chi-square test statistic.x² =(Round to two decimal places as needed.)What is the P-value for the test statistic?The P-value is(Round to three decimal places as needed.)

a & b) Given is a completely randomized design with three level of treatments. The response…

(d) State the null and alternative hypotheses. O A. Ho: P₁ P2 = P3 H₁: At least one of the proportions is different from the others. B. Ho: Quitting and group are independent. H₁: Quitting and group are dependent. O C. Ho: 0₁=E₁ and O₂ = E₂ and O3 = E3 H₁:0₁ #E₁ or 0₂ # E2 or 03 #E3 O D. Ho: P₁ P2 = P3 H₁: P₁ P2 P3 (e) Does the evidence suggest e-cigs are effective in helping individuals abstain from cig Compute the value of the chi-square test statistic. x² = = (Round to two decimal places as needed.) What is the P-value for the test statistic? The P-value is

(d) State the null and alternative hypotheses. O A. Ho: P₁ P2 = P3 H₁: At least one of the proportions is different from the others. B. Ho: Quitting and group are independent. H₁: Quitting and group are dependent. O C. Ho: 0₁=E₁ and O₂ = E₂ and O3 = E3 H₁:0₁ #E₁ or 0₂ # E2 or 03 #E3 O D. Ho: P₁ P2 = P3 H₁: P₁ P2 P3 (e) Does the evidence suggest e-cigs are effective in helping individuals abstain from cig Compute the value of the chi-square test statistic. x² = = (Round to two decimal places as needed.) What is the P-value for the test statistic? The P-value is

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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