(30pts) 1. For the following statements, mark a if it is true, and mark a × otherwise. ()(a) Let a r.v. X ∼ b(40, 0.6), then V ar(X) = 9.6. ∞ 0 e −x 2 dx = √ π 2. ()(f) In a certain random experiment, let A and B be two events such that P (A) = 0.8, P (B) = 0.5, and P ((A ∪ B)) = 0.1. Then A and B are independent events. ()(g) In a lottery, an integer is… (More)

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