A random variable x has the following probability distribution:

x

f(x)

0

0.08

1

0.17

2

0.45

3

0.25

4

0.05

a. Determine the expected value of x.

b. Determine the variance.

x

f(x)

0

0.08

1

0.17

2

0.45

3

0.25

4

0.05

a. Determine the expected value of x.

b. Determine the variance.

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