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Discussion :: Signals and Systems

  1. X and Y are two random variable and Z = X + Y. Let σx2, σy2 and σz2 be variance of X, Y and Z. Then

    2. A.
    σz2 = σx2 + σy2
    B.
    σz2 ≤ σx2 + σy2
    C.
    σz2 < σx2 + σy2
    D.
    σz2 > σx2 + σy2

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    Answer : Option A

    Explanation :

    No answer description available for this question.

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