Question: Let X be a random variable with the following probability distribution. Value x of X P(x = X) 4 0.30 5 0.25 6 0.10 7

LetX be a random variable with the following probability distribution.

Valuex ofX P(x =X)

4 0.30

5 0.25

6 0.10

7 0.25

8 0.10

a)Find the expectationE (X)ofX

E(X)=

(b)Find the variance Var(X)ofX

Var (X)

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