A school conducted a survey of 200 students to determine their enrollment in advanced courses and their grade level. The results are shown in the table below.
| 11th Grade | Not 11th Grade | Total | |
|---|---|---|---|
| Adv Math Course | 70 | 30 | 100 |
| Adv Science Course | 40 | 60 | 100 |
| Total | 110 | 90 | 200 |
Given that a randomly selected student is enrolled in an advanced science course, what is the probability that the student is NOT in 11th grade?
