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The probability distribution for the discrete random variable Wis given in the table. W 1 2 3 4 P(W = W) 0.25 0.36 X x2

The probability distribution for the discrete random variable Wis given in the table. W 1 2 3 4 P(W = W) 0.25 0.36 X x2 (a) Show that Var(W) = 0.8571. [7] (b) Find Var(31+6). [1]

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