Question: With X a discrete variable with a uniform distribution over {a,b}, prove that E(X) = (a+b)/ 2 note: (sum k=1) = [n(n+1)]/2

With X a discrete variable with a uniform distribution over {a,b}, prove that

E(X) = (a+b)/ 2

note: (sum k=1) = [n(n+1)]/2

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