Question: The characteristic function of a random variable, X, is M X (jv) = (1 + v 2 ) -1 . Find the following: (a) The

The characteristic function of a random variable, X, is MX (jv) = (1 + v2)-1.

Find the following:
(a) The mean of X;

(b) The variance of X;

(c) The pdf of X;

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