Let X denote a random variable for which E[(X a) 2 ] exists. Give an example

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Let X denote a random variable for which E[(X − a)2] exists. Give an example of a distribution of a discrete type such that this expectation is zero. Such a distribution is called a degenerate distribution.

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Introduction To Mathematical Statistics

ISBN: 9780321794710

7th Edition

Authors: Robert V., Joseph W. McKean, Allen T. Craig

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