Question: Below is a probability distribution. x Probability f (x) 0 0.13 1 0.15 2 ? 3 0.20 4 0.12 5 0.10 Calculate and answer: a)Find

Below is a probability distribution.

x Probability f (x)

0 0.13

1 0.15

2 ?

3 0.20

4 0.12

5 0.10

Calculate and answer:

a)Find P(4).

b)What is the expected (average) value of the number of services?

c)What is the variance in the number of services?

d)What is the standard deviation?

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