Question 4 (a) Describe the estimator Ô for a quantity 0 (which you should also determine) that would be obtained by the following R code N=10000 sample rnorm (N) sum (sample <=2)/N Let y = (y,,y) be independent and identically distributed data from N(0, 0²), where σ² is known and is unknown. We want to estimate 0. We assume a prior N(μ, t²) for 0, where both μ and 7 are known. The posterior density of 0 is N(μ₁, σ²). (b) Show how you would use the MH algorithm to obtain samples from the posterior density of 0, N(μ₁, σ²) (c) Describe the following MCMC implementation issues and how they may be dealt with in practice (i) Starting values. (ii) Dependence of the iterations.
Question 4 (a) Describe the estimator Ô for a quantity 0 (which you should also determine) that would be obtained by the following R code N=10000 sample rnorm (N) sum (sample <=2)/N Let y = (y,,y) be independent and identically distributed data from N(0, 0²), where σ² is known and is unknown. We want to estimate 0. We assume a prior N(μ, t²) for 0, where both μ and 7 are known. The posterior density of 0 is N(μ₁, σ²). (b) Show how you would use the MH algorithm to obtain samples from the posterior density of 0, N(μ₁, σ²) (c) Describe the following MCMC implementation issues and how they may be dealt with in practice (i) Starting values. (ii) Dependence of the iterations.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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