Practice Exercise 2 Answer the following: 5. Your neighbor has 4 children. You learn that he has a son, Joe. What is the probability that Joe's sibling is a brother? 6. A die is rolled. What is the probability that the die lands on 2 given that it lands on an even number? Wattage 20 7. A number is selected randomly from a container containing all the integers from 10 to 50. Find: a) P(even | greater than 40) b) b) P(greater than 40 | even) c) c) P(prime | between 20 and 40) 50 100 Total Good 80 100 120 300 Defective 15 5 10 88 30 a. Total 95 105 130 330 5 40 10 40 b. 5 40 21 40 = 5 21 a. Good given it is 100 watts a. b. Defective given it is 50 watts c. 100 watts given it is good d. 50 watts given it is defective 8. A quality control inspector, is checking a sample of light bulbs for defects. The following table summarizes her findings. If one of these light bulbs is selected at random, find the probability that the light bulb is 120 330 130 330 C. = al wart 4 40 19 40 12 13 11434 19 11 11 113 1|3