The national mean annual salary for a school administrator is

A company wants to evaluate its attrition rate, in other words, how long new hires stay with the

company. Over the years, they have established the following probability distribution.

Let X = the number of years a new hire will stay with the company.

Let P(x) = the probability that a new hire will stay with the company x years.

a. Complete the distribution table below.

b. On average, how long would you expect a new hire to stay with the company?

                                                    

x	P(x)
0	0.12
1	0.18
2	0.30
3	0.15
4
5	0.10
6	0.05

                                                        E(x)___________