Researchers found 300 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 which each cartridge contained 7.2 mg of nicotine, Gro 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 which group they were assigned. During the course of the intervention, subjects dropped out of the stud At the end of the study 72 subjects remained in Group 1, 69 in Group 2, and 56 in Group 3. Results as to whether the subject quit smoking entirely are available below. Complete parts (a) through (g). Click here to view the results of the study. Click here to view the table of critical values of the chi-square distribution, The response variable quit or not quit is qualitative. Study Results (c) To what population do the results of this study apply? * Current smokers Group 1 Group 2 Group 3 D e-Cig Smokers Did Not Quit Quit 53 55 52 19 14 4 Smokers in the study Former smokers Chi-Square Distribution Critical Values Table (d) State the null and alternative hypotheses. O A. Ho: P1 = P2 = P3 H: P1 P2 # P3 B. Ho: P1 =P2 = P3 Chi-Square (x) Distribution Areato the Right of Critical Vahue Degrees of Freedom H: At least one of the proportions is different from the others. 0995 0.99 0975 095 090 0.10 0.05 0.025 0.01 OC. Họ: 0, = E, and O2 = E, and Og = Eg H,: 0, #E, or O2 #E2 or Og #E3 O D. Ho: Quitting and group are independent. 0.010 0072 0.207 0.412 0020 0115 0297 0554 0.001 0.051 0.216 0.484 0.831 0.004 0.103 0.352 0.711 1.145 0.016 0.211 0.584 1.064 1.610 2.706 4.605 6.251 7.779 9.236 3.841 5991 7815 9488 11.070 5.024 7.378 9.348 11.143 12.833 6635 9.210 11345 13.277 15.086 78 10.5 128 14. 16.7 H: Quitting and group are dependent. 0.676 0989 1.344 1.735 0.872 1.239 1.646 2.088 1237 1.690 2.180 2.700 1.635 2.167 2.733 3.325 2.204 2.833 3.490 4.168 10.645 12.017 13.362 14.684 12592 14.067 15.507 16.919 14.449 16.013 17535 19.023 16.812 18.475 20.090 21.666 18.5 202 21.9 235 6. (e) Does the evidence suggest e-cigs are effective in helping individuals abstain from cigarette smoking? Use a = 0.1.
Researchers found 300 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 which each cartridge contained 7.2 mg of nicotine, Gro 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 which group they were assigned. During the course of the intervention, subjects dropped out of the stud At the end of the study 72 subjects remained in Group 1, 69 in Group 2, and 56 in Group 3. Results as to whether the subject quit smoking entirely are available below. Complete parts (a) through (g). Click here to view the results of the study. Click here to view the table of critical values of the chi-square distribution, The response variable quit or not quit is qualitative. Study Results (c) To what population do the results of this study apply? * Current smokers Group 1 Group 2 Group 3 D e-Cig Smokers Did Not Quit Quit 53 55 52 19 14 4 Smokers in the study Former smokers Chi-Square Distribution Critical Values Table (d) State the null and alternative hypotheses. O A. Ho: P1 = P2 = P3 H: P1 P2 # P3 B. Ho: P1 =P2 = P3 Chi-Square (x) Distribution Areato the Right of Critical Vahue Degrees of Freedom H: At least one of the proportions is different from the others. 0995 0.99 0975 095 090 0.10 0.05 0.025 0.01 OC. Họ: 0, = E, and O2 = E, and Og = Eg H,: 0, #E, or O2 #E2 or Og #E3 O D. Ho: Quitting and group are independent. 0.010 0072 0.207 0.412 0020 0115 0297 0554 0.001 0.051 0.216 0.484 0.831 0.004 0.103 0.352 0.711 1.145 0.016 0.211 0.584 1.064 1.610 2.706 4.605 6.251 7.779 9.236 3.841 5991 7815 9488 11.070 5.024 7.378 9.348 11.143 12.833 6635 9.210 11345 13.277 15.086 78 10.5 128 14. 16.7 H: Quitting and group are dependent. 0.676 0989 1.344 1.735 0.872 1.239 1.646 2.088 1237 1.690 2.180 2.700 1.635 2.167 2.733 3.325 2.204 2.833 3.490 4.168 10.645 12.017 13.362 14.684 12592 14.067 15.507 16.919 14.449 16.013 17535 19.023 16.812 18.475 20.090 21.666 18.5 202 21.9 235 6. (e) Does the evidence suggest e-cigs are effective in helping individuals abstain from cigarette smoking? Use a = 0.1.
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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