Question

Compute E((X - m)(X - m)(X - m)(X - m)), the expected value of the fourth...

Compute E((X - m)(X - m)(X - m)(X - m)), the expected value of the fourth power of (X - m), for the case where m = E(X) = 1, E(X squared) = 3, E(X cubed) = 9, and E(X to fourth) = 30.

a. 16 b. 3 c. 9 d. 12 e. 4

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Answer #1

Consider:

Taking expectation both sides, we get:

Thus, the correct answer is c. 9 [ANSWER]

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