Question: 8.6.3 For random variables X and Y such that E ( X ) = 2 , E(Y) = 1, E(X2) = 10, E(Y2) = 3

8.6.3 For random variables X and Y such that E ( X ) = 2 , E(Y) = 1, E(X2) =

10, E(Y2) = 3 and E(XY) =

c, find: (i) Var(3X - 5Y). (ii) p x , ~(i.ii ) The range of values of c for which the assumptions of the problem are consistent.

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