The following table shows the purchases made by customers at a movie theater one evening:
| Popcorn purchased | Popcorn not purchased | Total | |
|---|---|---|---|
| Ticket purchased | 72 | 18 | 90 |
| Ticket not purchased | 24 | 6 | 30 |
| Total | 96 | 24 | 120 |
If a customer is selected at random, what is the probability that the selected customer purchased popcorn?
