Chapter 4 - Probability and Counting Rules - 4-3 The Multiplication Rules and Conditional Probability - Exercises 4-3 - Page 223: 17

0.0005 This event is very unlikely to occur as the probability is very small.

Here iPods are sold without replacement, hence: P(All three are defective) = 3/24 x 2/23 x 1/22 = 0.125 x 0.0870 x 0.0455 = 0.0005 This event is very unlikely to occur as the probability is very small.