1.3-14. Paper is often tested for “burst strength” and “tear strength.” Say we classify these strengths as low, middle, and high. Then, after examining 100 pieces of paper, we find the following: Section 1.4 Independent Events 29 Burst Strength Tear Strength A1 (low) A2 (middle) A3 (high) B1 (low) 7 11 13 B2 (middle) 11 21 9 B3 (high) 12 9 7 If we select one of the pieces at random, what are the probabilities that it has the following characteristics: (a) A1? (b) A3 ? B2? (c) A2 ? B3?