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Math Help - Expectation and Variance.

  1. #1
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    Expectation and Variance.

    Could anybody please explain to me how to solve this question?

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    Quote Originally Posted by scofield131 View Post
    Could anybody please explain to me how to solve this question?

    i) and ii) Refer to your class notes or textbook.

    iii) E(aX + bY) = aE(X) + bE(Y) (which undoubtedly is also in your class notes and textbook)

    iv) If X and Y are independent, Var(aX + bY) = a^2Var(X) + b^2Var(Y) (which undoubtedly is also in your class notes and textbook).
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