If we know P(X1=1) =P(X1=2) =1/4, find P(X1=3, X2=2,X3=1)

Database System Concepts
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ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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  1. Consider the Markov chain with three states,S={1,2,3}, that has the following transition matrix

p=

1/2 1/4 1/4
1/3 0 2/3
1/4 1/2 0

a. Draw the state transition diagram for this chain

b. If we know P(X1=1) =P(X1=2) =1/4, find P(X1=3, X2=2,X3=1) 

 

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