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E (r) = 10, Var (r) = 2 1. Var (3r) = 2. Var(-2r) = 3. Var(5r +5) = 4. E(2r) + Var(2r) = 5.

E (r) = 10, Var (r) = 2 1. Var (3r) = 2. Var(-2r) = 3. Var(5r +5) = 4. E(2r) + Var(2r) = 5. Var(-r) = 6. Var(3) = 7.2 x Var(2) + 2 x E(2) =

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