加工某一零件共需两道工序,若第一、二道工序的不合格品率分别为3%和5%,假定各工序是互不影响的,问:加工出来的零件是不合格品的概率是多少?这是一道非常典型的“有试验终止条件的事件的概率”问题.在这个问题中,如果第一道工序为不合格,则该产品为不合格品,此时就没有第二道工序了.像 Processing a part requires a total of two processes, if the first and second processes of nonconforming products were 3% and 5%, assuming that the processes are independent of each other, and asked: processed parts is nonconforming This is a very typical “probability of an event with a trial termination condition.” In this problem, if the first procedure is unqualified, the product is a nonconforming product, and at this point No second procedure