QUESTION 6 Suppose a random variable X has probability distribution function 2kr q²+I? for x = 2, 3 kx P(X = x) = for x = 4,5 %3| r² –1 ' 0, otherwise. where k is a numerical constant. Determine the expected value of X, using the value of k found. 6.228 2.938 8.452 3.586

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