Suppose that the introduction of a preventive maintenance program is deemed cost effective. Which of the following is most likely TRUE if the cost to actually perform preventive maintenance is very expensive?
A) high standard deviation in MTBF
B) low standard deviation in MTBF
C) low cost to repair
D) Repairs carry little nonmonetary consequences.
E) The system never fails.

Question

Quizplus · Accepted Answer

When the cost to perform preventive maintenance is very expensive, it is likely that the maintenance activities will be performed consistently and thoroughly, resulting in a low standard deviation in mean time between failures (MTBF). This means that the system will be more reliable and experience fewer unexpected failures. The cost to repair may or may not be low, and there may still be nonmonetary consequences associated with failure. The system will not necessarily never fail, but it will be more reliable.

Suppose That the Introduction of a Preventive Maintenance Program Is