The 95% confidence interval for the difference between the proportion of smokers in the bupropion and placebo groups who did not smoke in weeks 9–12 of the study.

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Answer 1

Question

Chapter 25, Problem 25.31E

a.

To determine

To find: The 95% confidence interval for the difference between the proportion of smokers in the bupropion and placebo groups who did not smoke in weeks 9–12 of the study.

b.

To determine

To find: The proportion of subjects among the three groups who did not smoke in the weeks 9-12.

To check: Whether there are statistically significant differences among these proportions.

To state: The hypotheses and give a test statistic and its P-value.

c.

To determine

To check: Whether the chi-square test of independence or homogeneity can be used.

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Answer 2

Question

Chapter 25, Problem 25.31E

a.

To determine

To find: The 95% confidence interval for the difference between the proportion of smokers in the bupropion and placebo groups who did not smoke in weeks 9–12 of the study.

b.

To determine

To find: The proportion of subjects among the three groups who did not smoke in the weeks 9-12.

To check: Whether there are statistically significant differences among these proportions.

To state: The hypotheses and give a test statistic and its P-value.

c.

To determine

To check: Whether the chi-square test of independence or homogeneity can be used.

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Answer 3

Question

Chapter 25, Problem 25.31E

a.

To determine

To find: The 95% confidence interval for the difference between the proportion of smokers in the bupropion and placebo groups who did not smoke in weeks 9–12 of the study.

b.

To determine

To find: The proportion of subjects among the three groups who did not smoke in the weeks 9-12.

To check: Whether there are statistically significant differences among these proportions.

To state: The hypotheses and give a test statistic and its P-value.

c.

To determine

To check: Whether the chi-square test of independence or homogeneity can be used.

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Answer 4

Question

Chapter 25, Problem 25.31E

a.

To determine

To find: The 95% confidence interval for the difference between the proportion of smokers in the bupropion and placebo groups who did not smoke in weeks 9–12 of the study.

b.

To determine

To find: The proportion of subjects among the three groups who did not smoke in the weeks 9-12.

To check: Whether there are statistically significant differences among these proportions.

To state: The hypotheses and give a test statistic and its P-value.

c.

To determine

To check: Whether the chi-square test of independence or homogeneity can be used.

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Answer 5

Chapter 25, Problem 25.31E

a.

To determine

To find: The 95% confidence interval for the difference between the proportion of smokers in the bupropion and placebo groups who did not smoke in weeks 9–12 of the study.

b.

To determine

To find: The proportion of subjects among the three groups who did not smoke in the weeks 9-12.

To check: Whether there are statistically significant differences among these proportions.

To state: The hypotheses and give a test statistic and its P-value.

c.

To determine

To check: Whether the chi-square test of independence or homogeneity can be used.

Answer 6

Chapter 25, Problem 25.31E

a.

To determine

To find: The 95% confidence interval for the difference between the proportion of smokers in the bupropion and placebo groups who did not smoke in weeks 9–12 of the study.

Answer 7

Chapter 25, Problem 25.31E

a.

To determine

To find: The 95% confidence interval for the difference between the proportion of smokers in the bupropion and placebo groups who did not smoke in weeks 9–12 of the study.

Answer 8

b.

To determine

To find: The proportion of subjects among the three groups who did not smoke in the weeks 9-12.

To check: Whether there are statistically significant differences among these proportions.

To state: The hypotheses and give a test statistic and its P-value.

Answer 9

b.

To determine

To find: The proportion of subjects among the three groups who did not smoke in the weeks 9-12.

To check: Whether there are statistically significant differences among these proportions.

To state: The hypotheses and give a test statistic and its P-value.

Answer 10

c.

To determine

To check: Whether the chi-square test of independence or homogeneity can be used.

Answer 11

c.

To determine

To check: Whether the chi-square test of independence or homogeneity can be used.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 25.1 - Prob. 1AYK Ch. 25.1 - Prob. 2AYK Ch. 25.2 - Prob. 3AYK Ch. 25.2 - Prob. 4AYK Ch. 25.3 - Prob. 5AYK Ch. 25.3 - Prob. 6AYK Ch. 25.5 - Prob. 7AYK Ch. 25.5 - Prob. 8AYK Ch. 25.5 - Prob. 9AYK Ch. 25.6 - Prob. 10AYK

The 95% confidence interval for the difference between the proportion of smokers in the bupropion and placebo groups who did not smoke in weeks 9–12 of the study.

Concept explainers

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To find: The 95% confidence interval for the difference between the proportion of smokers in the bupropion and placebo groups who did not smoke in weeks 9–12 of the study.

To find: The proportion of subjects among the three groups who did not smoke in the weeks 9-12.

To check: Whether there are statistically significant differences among these proportions.

To state: The hypotheses and give a test statistic and its P-value.

To check: Whether the chi-square test of independence or homogeneity can be used.

Want to see the full answer?

Chapter 25 Solutions

The 95% confidence interval for the difference between the proportion of smokers in the bupropion and placebo groups who did not smoke in weeks 9–12 of the study.

Concept explainers

Videos

To find: The 95% confidence interval for the difference between the proportion of smokers in the bupropion and placebo groups who did not smoke in weeks 9–12 of the study.

To find: The proportion of subjects among the three groups who did not smoke in the weeks 9-12. To check: Whether there are statistically significant differences among these proportions. To state: The hypotheses and give a test statistic and its P-value.

To check: Whether the chi-square test of independence or homogeneity can be used.

Want to see the full answer?

Chapter 25 Solutions

To find: The proportion of subjects among the three groups who did not smoke in the weeks 9-12.

To check: Whether there are statistically significant differences among these proportions.

To state: The hypotheses and give a test statistic and its P-value.