Hi, yeah I meant (b) - sorry for confusion
E(Z_n) =
1 + E(N_n) for λ=1
E( (λ^(1 + N_n) - 1)/(λ-1) ) for λ≠1
Do you know where to start for this question!?
Homework Statement
A computer virus is modeled by a branching process which branches at times of a renewal process. It begins only one machine. At renewal times of a discrete-time renewal process, with mean inter-renewal time μ, a command server sends an instruction to all computers with...