Question: Let X be a random variable with the following probability distribution: Value x of X P = X x -300.05-200.40-100.4500.05100.05 Find the expectation E X

LetX

be a random variable with the following probability distribution:

Valuex

ofX

P

=

X

x

-300.05-200.40-100.4500.05100.05

Find the expectation

E

X

and varianceVar

X

ofX

. (If necessary, consult alist of formulas.)

=

E

x

=

Var

X

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