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Help to solve this question thx!! Consider an arbitrary RV X with MGF mx (t) 0. (a) (5 points) If E(X) = 0, show that

Help to solve this question thx!!

Consider an arbitrary RV X with MGF mx (t) 0. (a) (5 points) If E(X) = 0, show that mx(t) 2 1, Vt 2 0. (b) (5 points) Show that mx (2t) > [mx(t)]?, Vt > 0

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