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Fall 2005 Exam C

# Fall 2005 Exam C - Exam C Fall 2005 FINAL ANSWER KEY...

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Exam C, Fall 2005 FINAL ANSWER KEY Question # Answer Question # Answer 1 D 19 B 2 A 20 A 3 E 21 B 4 B 22 A 5 E 23 E 6 E 24 B and C 10 D and E

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Exam C: Fall 2005 -1- GO ON TO NEXT PAGE **BEGINNING OF EXAMINATION** 1. A portfolio of policies has produced the following claims: 100 100 100 200 300 300 300 400 500 600 Determine the empirical estimate of H (300). (A) Less than 0.50 (B) At least 0.50, but less than 0.75 (C) At least 0.75, but less than 1.00 (D) At least 1.00, but less than 1.25 (E) At least 1.25
Exam C: Fall 2005 -2- GO ON TO NEXT PAGE 2. You are given: (i) The conditional distribution of the number of claims per policyholder is Poisson with mean λ . (ii) The variable λ has a gamma distribution with parameters α and θ . (iii) For policyholders with 1 claim in Year 1, the credibility estimate for the number of claims in Year 2 is 0.15. (iv) For policyholders with an average of 2 claims per year in Year 1 and Year 2, the credibility estimate for the number of claims in Year 3 is 0.20. Determine θ .

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Exam C: Fall 2005 -3- GO ON TO NEXT PAGE 3. A random sample of claims has been drawn from a Burr distribution with known parameter α = 1 and unknown parameters θ and γ . You are given: (i) 75% of the claim amounts in the sample exceed 100. (ii) 25% of the claim amounts in the sample exceed 500. Estimate θ by percentile matching. (A) Less than 190 (B) At least 190, but less than 200 (C) At least 200, but less than 210 (D) At least 210, but less than 220 (E) At least 220