## Answers

Vaccinated | Not Vaccinated | |

TB | 16 | 68 |

No TB | 173 | 254 |

1. i = 16

2. ii = 68

3. iii = 173

4. iv = 254

5.

Ho : The vaccination is not significant in reducing the chances of TB or

6. H1: The vaccination is significant in reducing the chances of TB or

7. We can use difference or ratio to compare them.

8. chi-square test is most appropriate to see the association between TB and vaccine.

9. X-squared = 13.88 is the test statistic

10.

P-value = 0.0001949 < 0.05 (we reject Ho) or

11. can conclude that The vaccination is significant in reducing the chances of TB or

12. We are 95% confident that the population difference in proportion of people with TB vaccinated and not avccinated ranges from -0.067 to -0.186

*Please rate my answer and comment for doubt.*

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