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Problem 0.1 Let Xt be the number of people who enter a bank by time t...

Problem 0.1 Let Xt be the number of people who enter a bank by time t > 0. Suppose Pr[Xt = k] ... Problem 0.1 Let Xt be the number of people who enter a bank by time t > 0. Suppose Pr[Xt = k] = (tk e−t )/k! , for k = [0, 1, 2, . . . ,] and Pr[Xt = k, Xs = r] = sr *(t − s)k−r *e−t /(r!(k − r)!) , for t > s > 0, and k ≥ r = 0, 1, 2, . . .

(a) Find E[X2 | X1 = 1].

math   Statistics-And-Probability   
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(k〉 1 ) к.е (K-DI -1 2e-1 之

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