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P 2. The probability distribution of a discrete random variable X is 0 1 2 Mx (t) let 1 2t [3 marks] (a) Find E(X).

P 2. The probability distribution of a discrete random variable X is 0 1 2 Mx (t) let 1 2t [3 marks] (a) Find E(X). [4 marks] (b) Find Var(3 + 2X2)

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