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x 2 e. Suppose Yl, Y2, . .., Yn are i.i.d. random variables with f(yi) = Lazy a2 -1 1 . Assume a2 is known.

x 2 e. Suppose Yl, Y2, . .., Yn are i.i.d. random variables with f(yi) = Lazy a2 -1 1 . Assume a2 is known. Show that , Y, 2 is a sufficient statistics for a1

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