📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!
  • google app store apple app store
    • ✖

      Question

      If X and Y are independent random variables and

      Var(X)=Var(Y)=4, then find Var(2X-3Y+1)?
      A 37 Correct Answer Incorrect Answer
      B 52 Correct Answer Incorrect Answer
      C 25 Correct Answer Incorrect Answer
      D 29 Correct Answer Incorrect Answer

      Solution

      Var(2X-3Y+1) = (2)^2*VarX + (3)^2*Var(Y) + Var(1) = 4*4+ 9*4 = 16+36 = 52 Since, variance of constant is 0, so Var (1) is 0.

      Practice Next
      More Research Questions
      ask-question