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Let X be a random variable with P(X=0)=P(X=1)=P(X=2)=51 and P(X=3)=52. (a) Find the expectation of (i) X (ii) X2 (b) What is the variance of

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Let X be a random variable with P(X=0)=P(X=1)=P(X=2)=51 and P(X=3)=52. (a) Find the expectation of (i) X (ii) X2 (b) What is the variance of X

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