Acceptance sampling is a statistical method used to monitor the quality of purchased parts and components. To ensure the quality of incoming parts, a purchaser or manu- facturer normally samples 20 parts and allows 1 defect. a. What is the likelihood of accepting a lot that is 1% defective? b. If the quality of the incoming lot was actually 2%, what is the likelihood of accepting it? c. If the quality of the incoming lot was actually 5%, what is the likelihood of accepting it?