In Exercise 9.17, suppose that the populations are normally distributed with 2 1 = 2 2 =
Chapter 9, Problem 9.18(choose chapter or problem)
In Exercise 9.17, suppose that the populations are normally distributed with 2 1 = 2 2 = 2. Show that n i=1(Xi X)2 + n i=1(Yi Y )2 2n 2 is a consistent estimator of 2.
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