Two people A and B play a series of games, in which they bet on a particular share price increasing or decreasing on a particular day. If the share price increases, player B pays player A £1; whereas if the share price decreases, player A pays player B £1. The probability of the share price increasing on any particular day is p independently of any other day, and the probability of the share price decreasing is q = (1 – p). Initially, both A and B have £2, and the series of games ends when one player runs out of money. We let X, be amount of money possessed by player A after n days, so X, = 2, and we consider the random process Xo, X1, X2, .... (a) Explain why the state space of this random process is {0, 1, 2, 3, 4}. (b) Explain why this random process is a Markov process. (c) Explain why the transition matrix for this random process is 1 0 0 0 0 q0 P 0 0 0 q 0 p 0 0 0 q 0 p 0 0 0 0 1 (d) What is the 2-step transition matrix for this Markov process? (e) Classify the states of this random process.
Two people A and B play a series of games, in which they bet on a particular share price increasing or decreasing on a particular day. If the share price increases, player B pays player A £1; whereas if the share price decreases, player A pays player B £1. The probability of the share price increasing on any particular day is p independently of any other day, and the probability of the share price decreasing is q = (1 – p). Initially, both A and B have £2, and the series of games ends when one player runs out of money. We let X, be amount of money possessed by player A after n days, so X, = 2, and we consider the random process Xo, X1, X2, .... (a) Explain why the state space of this random process is {0, 1, 2, 3, 4}. (b) Explain why this random process is a Markov process. (c) Explain why the transition matrix for this random process is 1 0 0 0 0 q0 P 0 0 0 q 0 p 0 0 0 q 0 p 0 0 0 0 1 (d) What is the 2-step transition matrix for this Markov process? (e) Classify the states of this random process.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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