Question: Let X be arandom variablewith the followingprobability distribution. Value x of X P = X x -100.1500.10100.30200.20300.25 Complete the following. (If necessary, consult alist of

LetX

be arandom variablewith the followingprobability distribution.

Valuex

ofX

P

=

X

x

-100.1500.10100.30200.20300.25

Complete the following. (If necessary, consult alist of formulas.)

(a)Find the expectationE

X

ofX

.=

E

X

(b)Find the variance VarX

ofX

.=

Var

X

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