4.60 Suppose that X andY are independent random variables having the joint probability distribution f (x, y) 1 2 4 0.10 0.15 0.20 0.10 5 3 0.30 0.15 Find (а) Е(2X — ЗҮ); (b) Е(ХҮ). -

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A:

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A: trigonometry rule

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A: We will write x as a linear combination of a and b as follows :

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A:

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