Question: Find E(Y2) if the moment-generating function for Y is given by MY(t) = et+4t2. Use Example 3.12.4 to find E(Y2) without taking any derivatives.

Find E(Y2) if the moment-generating function for Y is given by MY(t) = e−t+4t2. Use Example 3.12.4 to find E(Y2) without taking any derivatives.

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