The table gives the distribution of votes for a new school mascot and grade level for 80 students.
| Mascot | Sixth | Seventh | Eighth | Total |
|---|---|---|---|---|
| Badger | 4 | 9 | 9 | 22 |
| Lion | 9 | 2 | 9 | 20 |
| Longhorn | 4 | 6 | 4 | 14 |
| Tiger | 6 | 9 | 9 | 24 |
| Total | 23 | 26 | 31 | 80 |
If a student who did NOT vote for Lion is selected at random, what is the probability that this student is a Seventh grader?
