Problem 17.21 Question Help 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 $2,000. The current maintenance policy (with station employees performing maintenance) has yielded the following history: 0 3 4 Number of breakdowns Number of years in which breakdowns occurred 1 2 2 3 5 3 5 a) The expected number of breakdowns per year with station employees performing maintenance breakdowns per year (round your response to two decimal places)