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4.. Let X. , X2, . . . . X20 be a random sample ofsize n = 20 from an New. 2) population. Specify each

4.\". Let X. , X2, . . . . X20 be a random sample ofsize n = 20 from an New. 2) population. Specify each of the following completely. (a) The distribution of(X1 u)'z"(x. - it) (b) The distributions of: and V7\"? - H) (c) The distribution of (n 1) s

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