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If X1 ∼ χ21  and X2 ∼ χ21 , then? show your work. (a) X1 + X2...

If X1 ∼ χ21  and X2 ∼ χ21 , then? show your work.

(a) X1 + X2 - x22

(b) X1/X2 ∼ F1,1

(c) X1 + X2 > 0

(d) All of the above

(e) None of the above

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