Question 1076593
The total percentage of cars needing a tune-up is (0.6)(0.09)+(0.3)(0.2)+(0.1)(0.06)=.054+.06+.006=.12
Cars from company 2 needing a tune-up represent .06/.12=0.5
If the rental car delivered to the firm needs a tune-up, there is a 50% likelihood that it came from company 2. ☺☺☺☺