2. Let(Zn : n = 0,1,2, be a branching process with offspring distribution X ~ Bin(2,...
Question related to branching processes. Zn is the number of offspring in generation n. I know that Pk is a geometric distribution, but am unsure of where to go from there. Exercise 9.17 Find the mean and variance of Zn when the family-size distribution is given by P for k 0, 1, 2, . . . , and 0 < p 뉘-q < 1 . Deduce that var(Zn)-0 if and only if p
9. Consider the Branching Process {Xn,n = 0,1,2,3,...} where Xn is the population size at the nth generation. Assume P(Xo = 1) = 1 and that the probability generating function of the offspring distribution is common A(z) (z3322z + 4) 10 (а) If gn 3 P(X, — 0) for n %3D 0, 1,..., write down an equation relating ^n+1 and qn. 0,1,2 Hence otherwise, evaluate qn for n= or (b) Find the extinction probability q = lim00 n 6 marks]...
1. Consider a branchi ng process with offspring distribution (p) k2o- Let X be the number of individuals in the n-th generation. Let un- P(Xn - 0) be the probability that the population already dies out at generation n. Show that un-(-1) for all n2 2, where o is the probability generating function of the offspring distribution.
5. In a discrete time population branching process, the probability that an individual has j offspring is given by for j2 0, 0 <a < 1. |(1 a)a, = Find (a) the mean number of offspring of an individual (b) the probability of extinction of the line of descent from an individual. 5. In a discrete time population branching process, the probability that an individual has j offspring is given by for j2 0, 0
2) Let X,..X, be ii.d. N(O, 1) random variables. Define U- Find the limiting distribution of Zn (Hint: Recall that if X and Y are independent N(0, 1) random variables, then has a Cauchy distribution 2) Let X,..X, be ii.d. N(O, 1) random variables. Define U- Find the limiting distribution of Zn (Hint: Recall that if X and Y are independent N(0, 1) random variables, then has a Cauchy distribution
In the binomial replacement branching model with , let . (a) Show that P[T=n] for n≥1 is . (b) Find P[T=n] for . P(S) = q + ps T = inf{n: Zn=0 We were unable to transcribe this image0 < ? = 7
1. Let X ~ Bin(n = 12, p = 0.4) and Y Bin(n = 12, p = 0.6), and suppose that X and Y are independent. Answer the following True/False questions. (a) E[X] + E[Y] = 12. (b) Var(X) = Var(Y). (c) P(X<3) + P(Y < 8) = 1. (d) P(X < 6) + P(Y < 6) = 1. (e) Cov(X,Y) = 0.
5. Let X n 2 0} be a Markov chain with state space S = {0,1,2,...}. Suppose P{Xn+1 = 0|X,p = 0 3/4, P{Xn+1 = 1\Xn, P{Xn+1 = i - 1|X, 0 1/4 and for i > 0, P{X+1 = i + 1|X2 = i} i} 3/4. Compute the long run probabilities for this Markov chain = 1/4 and =
Let X denote the number of times a photocopy machine will malfunction: 0,1,2, or 3 times, on any given month. Let Y denote the number of times a technician is called onan emergency call. The joint p.m.f. p(x,y) is presented in the table below: y\. 0 1 2 3 0 0.15 0.30 0.05 0 1 0.05 0.15 0.05 0.05 2 0 0.05 0.10 0.05 Px(2) 0.20 0.50 0.20 0.10 py(y) 0.50 0.30 0.20 1.00 (a) Find the probability distribution of...
2. Suppose X - Unif (0, 1) and S, |X ~ Bin(n, X). Let I, indicate the ith trial is a success. This 10, find: implies that llx ~iid Bern(p a) P(S1o 3) X). For n c) P(I11 1S10 3) d) P(l111, 12 1S10 3) 2. Suppose X - Unif (0, 1) and S, |X ~ Bin(n, X). Let I, indicate the ith trial is a success. This 10, find: implies that llx ~iid Bern(p a) P(S1o 3) X). For...