The Dynaco Manufacturing Company produces a product in a process consisting of operations of five machines. The probability distribution of the number of machines that will break down in a week follows:
Machine Breakdowns
per Week ......... Probability
0 ............ .10
1 ........... .10
2 ............ .20
3 ............ .25
4 ........... .30
5 ............ .05
1.00

a. Simulate the machine breakdowns per week for 20 weeks.
b. Compute the average number of machines that will break down per week.