E Homework: Portfolio 4 Part 5 (chapter 17) Question 10. Problem 17.21 Part 1 of 3 HW Score: 83.33%, 16.67 of 20 points Points: 0.67 of 2 Save The fire department has a number of failures with its oxygen masks and is evaluating the possibility of outsourcing preventive maintenance to the manufacturer. Because of the risk associated with a failure, the cost of each failure is estimated at $2,000. The current maintenance policy (with station employees performing maintenance) has yielded the following history D 1 5 Number of breakdowns Number of years in which breakdowns occurred 0 5 2 3 3 3 4 4. 3 0 a) The expected number of breakdowns per year with station employees performing maintenance = breakdowns per year (round your response to two decimal places)