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Let X and Y be two random independent variables with x = 140, ox = 27, Jy = 400 and Oy = 24, find: 1.

Let X and Y be two random independent variables with x = 140, ox = 27, Jy = 400 and Oy = 24, find: 1. E(4 X- 4 Y + 300) = 920 Tries 1/: 2. Var(4 X- 4 Y + 300) = Tries 0/5 3. SD(4 X- 4 Y + 300) = Tries 0/5

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