求翻译：A solar company has an inspection system for batches of photovoltaic (PV) modules purchased from different vendors. A batch typically contains 20 modules, while the inspection system involves taking a random sample of 5 modules and testing all of them. Suppose there are 2 faulty modules in the batch of 20.是什么意思？

待解决 悬赏分：1 - 离问题结束还有