Let (W) be the birth-and-death process on Z+ {0, 1,2,...} with the following transition probabilities 11/11 2' Pi,i+1 Pi,i-1 = P01 = 1. i>1 C By relating (W) to the symmetric simple random walk (Y₂) on Z, or otherwise, prove that (W) is a recurrent Markov chain. By considering IMs, or otherwise, prove that (W) is null recurrent. Calculate the vectors y = (i = Z+) for the chain (W₂), k = Z+. Finally, let Wo = 0 and let N be the number of visits to 1 before returning to Show that Po(N = n) = (1/2)", n ≥ 1.

MATLAB: An Introduction with Applications
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Let (W) be the birth-and-death process on Z+
{0, 1,2,...} with the following transition probabilities
1
Pi,i+1 Pi,i-1 = i≥1
2²
P01 = 1.
By relating (W) to the symmetric simple random walk (Y) on Z, or otherwise,
prove that (W) is a recurrent Markov chain. By considering IMs, or otherwise,
prove that (W) is null recurrent.
Calculate the vectors * = (i = Z+) for the chain (W₂), k = Z+.
Finally, let Wo= 0 and let N be the number of visits to 1 before returning to 0.
Show that Po(N = n) = (1/2)", n ≥ 1.
Transcribed Image Text:= Let (W) be the birth-and-death process on Z+ {0, 1,2,...} with the following transition probabilities 1 Pi,i+1 Pi,i-1 = i≥1 2² P01 = 1. By relating (W) to the symmetric simple random walk (Y) on Z, or otherwise, prove that (W) is a recurrent Markov chain. By considering IMs, or otherwise, prove that (W) is null recurrent. Calculate the vectors * = (i = Z+) for the chain (W₂), k = Z+. Finally, let Wo= 0 and let N be the number of visits to 1 before returning to 0. Show that Po(N = n) = (1/2)", n ≥ 1.
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