Question

Q3. Printed circuit cards are placed in a functional test after being populated with semiconductor chips. A lot contains 50 cards, and 10 are selected without replacement for functional testing. If 5 cards among the 50 cards are defective, what is the probability that at least 1 defective card is in the sample? Q4 (Q18 in Problem Set 1). An inspector working for a manufacturing company has a 95% chance of correctly identifying defective items and 2% chance of incorrectly classifying a good item as defective. The company has evidence that 1% of the items it produces are nonconforming (defective). 1. What is the probability that an item selected for inspection is classified as defective? 2. If an item selected at random is classified as non defective, what is the probability that it is indeed good?