If E(X) = 3 and E(Y) = 5, then find E(3X+2Y), E(3X -Y)

1.	If E(X) = 3 and E(Y) = 5, then find E(3X+2Y), E(3X -Y)
Answer» E(3X + 2Y) = 3 E(x) + 2 E(y) = 3(3) + 2(5) = 9 + 10=19 E(3X – Y) = 3 E(X) + (-1) E(Y) = 3(3)- 5 = 9 – 5 = 4

Answer»

E(3X + 2Y) = 3 E(x) + 2 E(y) = 3(3) + 2(5) = 9 + 10=19

E(3X – Y) = 3 E(X) + (-1) E(Y) = 3(3)- 5 = 9 – 5 = 4

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