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QUESTION
Suppese X is a discrete random variable taking four values : x1, x2, r3 and x4, and Y is a discrete random variable taking two values: y1 and y2.
Suppese X is a discrete random variable taking four values : x1, x2, r3 and x4, and Y is a discrete random variable taking two values: y1 and y2. Based on the following contingency table to test whether X and Y are independent.
