Discuss the below:
Q1. What would be the mean of the test statistic if the null hypothesis were true? The value of the statistic is so far above this mean that you can see at once that it must be highly significant. What is the approximate P value?
Q2. Look at the terms of the chi-square statistic and compare observed and expected counts in the cells that contribute the most to chi-square. Based on this, write a short comparison of the differences in self-evaluation of health for current smokers and nonsmokers.
| |
Current Smoker |
| Health |
Yes |
No |
| Excellent |
25 |
484 |
| Very Good |
115 |
1557 |
| Good |
145 |
1309 |
| Fair |
90 |
545 |
| Poor |
29 |
11 |