Determine the Bühlmann credibility factor, Z, for the book of business. (A) 0.000 (B) 0.045 (C) 0.500 (D) 0.826 (E) 0.905 For a mortality study of insurance applicants in two countries, you are given:...

Extracted text: Determine the Bühlmann credibility factor, Z, for the book of business. (A) 0.000 (B) 0.045 (C) 0.500 (D) 0.826 (E) 0.905 For a mortality study of insurance applicants in two countries, you are given: (i) Country A d, Y, Country B t, Y, 1 20 200 0.05 15 100 0.10 2 54 180 0.10 20 85 0.10 3 14 126 0.15 20 65 0.10 4 22 112 0.20 10 45 0.10 Y, is the number at risk over the period (t-1,t,). Deaths during the period (t-1,t,) are assumed to occur at t, . (ii) 0, is the reference hazard rate over the period (t1,t,). Within a country, 0, is the same for all study participants. (iii) (iv) s' (t) is the Product-Limit estimate of S(t) based on the data for all study participants. (v) s*(t) is the Product-Limit estimate of S(t) based on the data for study participants in Country B. Determine s" (4)– Ss®(4) .