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If two Bernoulli random variables U and V follow different distribution but has the same variance 0.21, and X = U + V: . E(X) =? ·V(X)=?

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asamete y ト+4 ?)一ートー 냐.rt 0-2. I =ーО -0.21 +0.2 i t D = 0-42

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