試題詳解

88. The cumulative distribution function for health care costs experienced by a policyholder is modeled by the function

 The policy has a deductible of 20. An insurer reimburses the policyholder for 100% of health care costs between 20 and 120. Health care costs above 120 are reimbursed at50%.
Let G be the cumulative distribution function of reimbursements given that the reimbursement is positive.
Calculate G(115).
(A) 0.683
(B) 0.727
(C) 0.741
(D) 0.757
(E) 0.777