For Exercises 4.14 and 4.15, see pages 180–181; for 4.16 to 4.20, see pages 183–184; for 4.21 to 4.23, see pages 185–186; 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.
4.19 Occupational deaths.
Government data on job-related deaths assign a single occupation for each such death that occurs in the United States. The data on occupational deaths in 2012 show that the probability is 0.183 that a randomly chosen death was a construction worker and 0.039 that it was miner. What is the probability that a randomly chosen death was either construction related or mining related? What is the probability that the death was related to some other occupation?
4.19
By the disjoint rule: 0.222. By the complement rule: 0.778.