안녕하십니까 선생님, CPIM 100제 강의 문제풀이 중 26번 문제 관련하여 질문이 있습니다.

문제에서 “failure rate significantly decreases after an initial period of high failure rates”라고 되어 있어서,

저는 bathtub curve의 초반 구간인 early failure period / infant mortality period에서 고장률이 크게 감소하는 것을 묻는다고 이해했습니다.

B번은 normal life period에서 low and constant failure rate가 유지되는 구간을 설명하는 것이라, “significantly decreases”보다는 “decrease 이후 안정화된 상태”에 더 가까운 것 같습니다.

이렇게 이해하였는데, 무언가 제가 놓치고 있는 부분이 있을지 궁금합니다,,

 

감사합니다.

 

- 아 래 -

26. Which stage does the failure rate significantly decrease after an initial period of high failure rates?

A. During the early failure period, also known as the infant mortality period, where products are likely to fail due to manufacturing defects.

B. Throughout the normal life period, where the product experiences a low and constant failure rate after the initial defects are resolved.

C. At the beginning of the wear-out failure period, when the product starts to age and the failure rate begins to increase again.

D. The failure rate does not decrease according to the bathtub curve; it remains constant throughout the product's life cycle.