1. For the simple random walk with p ‡ ½, consider T₁ = min(n ≥ 1, S₂ = 1), and note the following law of total probability: P(T₁ = k) = P(T₁ = k|X₁ = 1) p + P(T₁ = k|X₁ = −1)q, where q = 1-p and which is valid for k≥ 1; special attention needs to be made between k = 1 and k > 1, Using the above, show we can write G₁(t) = pt + qt G₂(t) where G₂(t) = GT₂ (t) and T₂ = min(n ≥ 1, Sn = 2). Recalling that G₂(t) = [G₁(t)]², find G₁(t). 2. Following on from question 1, show that 1 Interpret this result. G₁(1) p> 21/12 - 1²/₁−1 p < 1/1
1. For the simple random walk with p ‡ ½, consider T₁ = min(n ≥ 1, S₂ = 1), and note the following law of total probability: P(T₁ = k) = P(T₁ = k|X₁ = 1) p + P(T₁ = k|X₁ = −1)q, where q = 1-p and which is valid for k≥ 1; special attention needs to be made between k = 1 and k > 1, Using the above, show we can write G₁(t) = pt + qt G₂(t) where G₂(t) = GT₂ (t) and T₂ = min(n ≥ 1, Sn = 2). Recalling that G₂(t) = [G₁(t)]², find G₁(t). 2. Following on from question 1, show that 1 Interpret this result. G₁(1) p> 21/12 - 1²/₁−1 p < 1/1
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.CR: Chapter 13 Review
Problem 43CR
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