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Q1) Test for survivability being independent upon ticket class or crew status for survivors of the sinking of HMS titanic. Use 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) Mention in English the null and alternate hypothesis

b) Compute the test statistic

c) Find out the critical value

d) Draw and label distribution used and position of values found in parts b) and c)

e) Based on these values what is result of test of independence described in English.

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