Consider three types of claims: A, B and C. Let XẠ denote the rand variable for the size of a randomly chosen claim of type A, and let and Xc denote the corresponding random variables for claims of ty B and C, respectively. Assume that XA, XB and Xc are exponentially distributed with parar ters A = 0.002, XB = 0.001 and Xc = 0.005, respectively.

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