試題詳解

8. Among a large group of patients recovering from shoulder injuries, it is found that 22% visit both a physical therapist and a chiropractor, whereas 12% visit neither of these. The probability that a patient visits a chiropractor exceeds by 0.14 the probability that a patient visits a physical therapist.
Calculate the probability that a randomly chosen member of this group visits a physical therapist.
(A) 0.26
(B) 0.38
(C) 0.40
(D) 0.48
(E) 0.62