Imagine that you are purchasing small lots of a manufactured product. If it is very costly to test a single item, it may be desirable to test a sample of items from the lot instead of testing every item in the lot. Suppose each lot contains 10 items. You decide to sample 4 items per lot and reject the lot if you observe 1 or more defectives. ,a. If the lot contains 1 defective item, what is the probability that you will accept the lot? ,b. What is the probability that you will accept the lot if it contains 2 defective items?
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