試題詳解

79. In a small metropolitan area, annual losses due to storm, fire, and theft are assumed to be mutually independent, exponentially distributed random variables with respective means1.0, 1.5, and 2.4.
Calculate the probability that the maximum of these losses exceeds 3.
(A) 0.002
(B) 0.050
(C) 0.159
(D) 0.287
(E) 0.414