Chapter 6.1, Problem 2E

Assume that the probability that an airplane engine will fail during a torture test is 12and that the aircraft in question has 4 engines. Construct a sample space for the torture test. Use S for survive and F for fail.

Shoulder InjuriesAmong 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. Determine the probability that a randomly chosen member of this group visits a physical therapist. Choose one of the following. Hint: Use the union rule for probability, and let x=P(patientvisitsaphyiscaltherapist). Source: Society of Actuaries. a. 0.26 b. 0.38 c. 0.40 d. 0.48 e. 0.62