Test2-version1

Test2-version1 - ACTSC 431 - Loss Models 1 FALL 2007 TEST...

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ACTSC 431 - Loss Models 1 FALL 2007 TEST #2 Name : ID Number : 1. (12 marks) Suppose that the per payment r.v. Y p is EXP ( = 50) distributed. In addition, the number of payments N p ± = 3 ) distribution with a probability mass at 0 , p M 0 , of 0 : 2 . The actuary responsible of reviewing the previous actuary±s work decides to use a slightly di/erent model for the next period based on the claim experience : the per payment r.v. Y p has the same distribution the distribution of N p (see above) will be used instead for the number of losses N L We assume that a loss results in a (non-zero) payment with probability 0 : 9 (independently of N L ). (a) (4 marks) Prove that the new distribution for N p ( ± = 2 : 7) with probability mass at 0 equal to 0 : 2147 . 1
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(b) (4 marks) Calculate the probability that the aggregate payment for the portfolio exceeds 100 using a normal approximation. (c)
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Test2-version1 - ACTSC 431 - Loss Models 1 FALL 2007 TEST...

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