Question: 1) Let X ~ U(0,b), with E(X) = 6.6. Calculate Var(X), give answer to 2 decimal places. 2) If X and Y are two random

1) Let X ~ U(0,b), with E(X) = 6.6. Calculate Var(X), give answer to 2 decimal places.

2) If X and Y are two random variables with E(X) = 8, Var(X) = 4.9, E(Y) = 15, Var(Y) = 7.7 and E(XY) = 204.4, then calculate Cov(X,Y) correct to 1dp.

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