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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