Lot of 100 items contains 10 defective items.Five itwms are selected at random from the lot and sent to the retail store.What is the probability that the store will receive at most one defective item?

A large chain retailer purchases certain kind of electric device from manufacturer.The manufacturer indicates that the defective rate of the device is 3%.The inspector of the retailer picks 20 items from a shipment.What is the probability that the store will receive atmost one defective item?

There are 5% defective items in a large bulk of items.What is the probability that a sample of 10 items will include not more than one defective item?

A room contains 3 sockets for bulbs. If from a collection of 10 bulbs, out of which 6 are defective, 3 bulbs are selected at random and put in the sockets, then the probability that the room is lighted is