Test for survivability being independent on ticket class or crew status for survivors of the sinking of HMS titanic. Employ the following contingency table and significance level of 5%.
| |
1st Class |
2nd Class |
3rd Class |
Crew |
Total |
| Survived |
203 |
118 |
178 |
212 |
711 |
| Pershed |
122 |
167 |
528 |
696 |
1513 |
| Total |
325 |
285 |
706 |
908 |
224 |
a) State in english the null and alternate hypothesis
b) Compute the test statistic
c) Find out the critival value
d) Draw and label the distribution employed and the position of values found in parts b) and c)
e) Based on these values what is the result of test of independence explained in English