5.36 Suppose that X1, . . . , Xn are i.i.d. random variables such that E(X1) =...
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5.36 Suppose that X1, . . . , Xn are i.i.d. random variables such that E(X1) = 0 and E(|X1|p) < ∞, where p ≥ 2. Show that E ⎛ ⎝ max 1≤k≤n k i=1 Xi p ⎞ ⎠ = O(np/2).
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