Question

7.70. Let X,...,x,; Y,., Y,; Z,..,Z, be respective independent random samples from three normal distributions N(u,a+ B, a) N(4-B+y,a), N(= a + y , a'). Find a point estimator for B that is based on X, Y, Z. Is this estimator unique? Why? If a is unknown, explain how to find a confidence interval for B.

Answer 1

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