ABC Manufacturing has 6 machines that perform a particular task. Breakdowns occur frequently for this machine. Past records indicate that the number of breakdowns that occur each day is described by the probability distribution seen below:

- What is the expected number of breakdowns in any given day?
- What is the variance for this distribution?
- What is the probability that there will be at least 2 breakdowns in a day?

Number of Break Downs Probability

0 0.4

1 0.3

2 0.2

3 0.1

more than 3 0.0