Question
In a factory there are three types of Machines M1 , M2 and M3 which produces 25%,35% and 40% of the total products respectively. M1 , M2 and M3 produces 5%,4% and 2% defective products, respectively. A bolt is drawn at random from the product and is found to be defective.What is the probability of that it is manufactured by machine M2?