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Get Full Access to Statistics: Informed Decisions Using Data - 5 Edition - Chapter 12.2 - Problem 13
Get Full Access to Statistics: Informed Decisions Using Data - 5 Edition - Chapter 12.2 - Problem 13

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?Efficacy of e-Cigs Do electronic cigarettes assist in helping individuals quit smoking? Researchers found 300 current smokers to volunteer for a study

ISBN: 9780134133539 240

Solution for problem 13 Chapter 12.2

Statistics: Informed Decisions Using Data | 5th Edition

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Statistics: Informed Decisions Using Data | 5th Edition

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Problem 13

Efficacy of e-Cigs Do electronic cigarettes assist in helping individuals quit smoking? 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, 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 which group they were assigned. During the course of the 52-week intervention, subjects dropped out of the study. At the end of the study 65 subjects remained in Group 1, 63 in Group 2, and 55 in Group 3. After 52 weeks, it was determined via questionnaire whether the subject quit smoking entirely. Results of the study are presented in the following table.

(a) What type of experimental design was used in this study?

(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?

(c) To what population do the results of this study apply?

(d) State the null and alternative hypotheses.

(e) Does the evidence suggest e-cigs are effective in helping individuals abstain from cigarette smoking?

(f) Draw a conditional bar graph by group. Explain what the graph suggests.

(g) Write a conclusion for this hypothesis test.

Step-by-Step Solution:

Step 1 of 5) Efficacy of e-Cigs Do electronic cigarettes assist in helping individuals quit smoking 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, 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 which group they were assigned. During the course of the 52-week intervention, subjects dropped out of the study. At the end of the study 65 subjects remained in Group 1, 63 in Group 2, and 55 in Group 3. After 52 weeks, it was determined via questionnaire whether the subject quit smoking entirely. Results of the study are presented in the following table. (a) What type of experimental design was used in this study (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 (c) To what population do the results of this study apply (d) State the null and alternative hypotheses. (e) Does the evidence suggest e-cigs are effective in helping individuals abstain from cigarette smoking (f) Draw a conditional bar graph by group. Explain what the graph suggests. (g) Write a conclusion for this hypothesis test.

Step 2 of 2

ISBN: 9780134133539

This textbook survival guide was created for the textbook: Statistics: Informed Decisions Using Data, edition: 5. Statistics: Informed Decisions Using Data was written by and is associated to the ISBN: 9780134133539. This full solution covers the following key subjects: . This expansive textbook survival guide covers 88 chapters, and 2422 solutions. The answer to “?Efficacy of e-Cigs Do electronic cigarettes assist in helping individuals quit smoking? 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, 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 which group they were assigned. During the course of the 52-week intervention, subjects dropped out of the study. At the end of the study 65 subjects remained in Group 1, 63 in Group 2, and 55 in Group 3. After 52 weeks, it was determined via questionnaire whether the subject quit smoking entirely. Results of the study are presented in the following table. (a) What type of experimental design was used in this study?(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?(c) To what population do the results of this study apply?(d) State the null and alternative hypotheses.(e) Does the evidence suggest e-cigs are effective in helping individuals abstain from cigarette smoking?(f) Draw a conditional bar graph by group. Explain what the graph suggests.(g) Write a conclusion for this hypothesis test.” is broken down into a number of easy to follow steps, and 226 words. The full step-by-step solution to problem: 13 from chapter: 12.2 was answered by , our top Statistics solution expert on 01/15/18, 03:19PM. Since the solution to 13 from 12.2 chapter was answered, more than 212 students have viewed the full step-by-step answer.

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