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Random Variableseasy
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A random variable XXX has PMF: P(X=−1)=0.2,P(X=0)=0.5,P(X=1)=0.3P(X=-1) = 0.2, P(X=0) = 0.5, P(X=1) = 0.3P(X=−1)=0.2,P(X=0)=0.5,P(X=1)=0.3. What is E[X]E[X]E[X]?