Question: If X Bernoulli(p) calculate E[X(X 1)] using: (a) the formula for E[g(X)]. (b) the known variance and expectation without using the formula for E[g(X)]).

If X Bernoulli(p) calculate E[X(X 1)] using:

(a) the formula for E[g(X)]. (b) the known variance and expectation without using the formula for E[g(X)]).

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