X (491,396) . Find (mu_{X}) and (sigma_{X}), and find (P(X in[0.45,0.50angle)). (You may calculate this

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X ∼ β(491,396). Find \(\mu_{X}\) and \(\sigma_{X}\), and find \(P(X \in[0.45,0.50angle)\). (You may calculate this both exactly and with the Normal approximation.)

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