Question 4 A manufacturing rm runs a certain plant 3 shifts per day. In fact, shifts] and 2 have produced 50% and 20% of the products, respectively. Of all the items produced on the shift 1, 2% of them are defective. Meanwhile, 3% are defective from shift 2. and 5% are defective from shift 3. An item was selected and found to be defective, calculate the probability that it was produced by shift 2. (Total: 5 marks)