Suppose X and Y V(X) = 3 and V(Y ) = 5. Find: (a) V(X +...

Question

Question

Suppose X and Y V(X) = 3 and V(Y ) = 5. Find:

(a) V(X + Y ) given that X, Y are independent

(b) V(3X + 4) given that X, Y are independent

(c) V(X + X) given that E(X · Y ) = −1

(d) V(X + 3Y ) given that E(X · Y ) = 0

math Statistics-And-Probability

Answer 1

Answer #1

Answer 2

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