A store gets 50% of its items from factory 1, 30% from factory 2, and 20% from factory 3 • 2% of factory 1’s items are defective • 3% of factory 2’s items are defective • 4% of factory 3’s items are defective • If an item from the store is found to be defective, find the probability that it comes from factory • 1 = Factory 1, 2 = Factory 2, 3 = Factory 3 • = Defective