The table below shows the probability distribution of a discrete random variable X. x P(X =...
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The table below shows the probability distribution of a discrete random variable X. x P(X = x) 0 0.2 1 2 3 a b 0.25 (a) Given that E(X) = 1.55, find the value of a and of b. (4) The table below shows the probability distribution of a discrete random variable X. x P(X = x) 0 0.2 1 2 3 a b 0.25 (a) Given that E(X) = 1.55, find the value of a and of b. (4)
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