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Let the random variables X and Y be independent and follow normal distribution N(u,σ^2)

匿名用户 最后更新于 2021-09-27 15:07 数学类Mathematics

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Let the random variables X and Y be independent and follow normal distribution N(u,o2) and N(u, 202) respectively, where. Is an unknown parameter and 0. Remember= X-Y. (1)Find the probability density of z f(z; o2); (2)Let Z1, Z2, Z3 be simple random samples from population Z, and find the maximum likelihood estimator o of o2:


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