For Exercises 4.14 and 4.15, see pages 180181; for 4.16 to 4.20, see pages 183184; for 4.21 to 4.23, see pages 185186; for 4.24, see page 187; for 4.25 and 4.26, see page 189; and for 4.27 to 4.29, see page 190.

Question 4.23

4.23 Use the addition rule.

CASE 4.1 Use the addition rule (Page 182) with the probabilities for the events and from Example 4.11 to find the probability of or .

4.23

0.681.