Refer to the following table describing the breakfast choices of 50 hotel guests. What is the probability that a guest selected at random purchased juice?
| Coffee purchased | Coffee not purchased | Total | |
|---|---|---|---|
| Juice purchased | 18 | 7 | 25 |
| Juice not purchased | 12 | 13 | 25 |
| Total | 30 | 20 | 50 |
