tput, while machine B produces 90% of the daily output. Of their output, 10% and 2% of their output are defective, respectively. a. A box of 30 screws is chosen at random from a day’s production and found one of them to be defective. What is the probability that this box came from machine A? b. A screw is chosen at random from a day’s production and found to be defective. What is the probability that it came from machine A? c. What is the probability of defective product of this fa

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A: D = defective  b1=0.30 b2 0.45 b3 =0.25 db1 =0.02 d/b2=0.03 d/b3=0.02

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