試題詳解

274. An insurance company examines its pool of auto insurance customers and gathers the following information:
i) All customers insure at least one car.
ii) 62% of the customers insure more than one car.
iii) 15% of the customers insure a sports car.
iv) Of those customers who insure more than one car, 20% insure a sports car.

Calculate the probability that a randomly selected customer insures exactly one car, and that the car is not a sports car.
(A) 0.230
(B) 0.260
(C) 0.323
(D) 0.354
(E) 0.380