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Mathematics, 25.01.2020 02:31 jessie8022
Afactory has four machines that produce the same item. machines 1 and 2 each produce 20% of the total output, while machines 3 and 4 are larger and each produces 30% of the total output. it is known that 6% of machine 1's output is defective, while machine 2 produces 5% defective items, and machines 3 and 4 each produces 8% defective items. a. an item is chosen at random from the output of the factory. what is the probability that this item is defective? b. given that the item selected in part a. is defective, what is the probability that it was produced by machine 1? c. given that the item selected in part a. is defective, what is the probability that it was produced by machine 2? d. given that the item selected in part a. is defective, what is the probability that it was produced by machine 3? e. given that the item selected in part a. is defective, what is the probability that it was produced by machine 4? f. what is the total of the probabilities in parts b.-e.?
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