3. Suppose that X is a discrete random variable with pmf 2 + 9(2 2:) = f\" where the unknown parameter 6' belongs to the parameter space (I = {1,|,1}. Suppose further that a random sample X1, X2, X3, X4 is taken from this distribution, and the four observed values are {$1,122,1123, $4} = {3, 2,3, 1}. Find the maximum likelihood estimator of 6. fliE) $215233

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