試題詳解

6. A Bayesian approach can be used to revise probubilitis that a prospect field will produce oil. In one case, gcological assessment indicates a 25% chance that the field will produce oil. Furthes, tlere is an 80% chance that particular well will strike oil given that oil is preseat in the prospect filed, Suppose that one well is drilled on the field and it comes up dry. What is the probability that tbe prospect filed will produce oil?
(A) 0.0333
(B)0.0425
(C)0.0625
(D) 0.0675