Considernbspanbspdiscretenbsprandomnbspvariablenbspxnbspwith

Consider a discrete random variable X, with the following probability distribution.

X	0	1	2	4	8
Pr(X = X)	0.2	0.3	0.3	0.15	0.05

A) Find the mean E(X) for this variable.

B) Find E(X^2) for the variable X

C) Find the variance Var(X) for this variable.

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Considernbspanbspdiscretenbsprandomnbspvariablenbspxnbspwith : considernbspanbspdiscretenbsprandomnbspvariablenbspxnbspwithnbspthenbspfollowingnbspprobabilitynbspdistribution.x01248pr

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