Engineering, 03.04.2021 17:00 sjkmxm4090
A large chain retailer purchases a certain kind of electronic device from a manu-
facturer. The manufacturer indicates that the defective rate of the device is 3%.
(a) The inspector randomly picks 20 items from a shipment. What is the proba-
bility that there will be at least one defective item among these 20?
(b) Suppose that the retailer receives 10 shipments in a month and the inspector
randomly tests 20 devices per shipment. What is the probability that there
will be exactly 3 shipments each containing at least one defective device among
the 20 that are selected and tested from the shipment?
Answers: 3
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A large chain retailer purchases a certain kind of electronic device from a manu-
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