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 non-monetary consequences
E) the system never fails

Question

Quizplus · Accepted Answer

Preventive maintenance, despite its high upfront cost, aims to reduce the unpredictability of system failures, thus leading to a lower standard deviation in Mean Time Between Failures (MTBF). This means the system has more consistent performance over time.

Suppose That the Introduction of a Preventive Maintenance Program Is