The administration at a university is interested in studying if any relationship exists between satisfaction at the school and whether the student is a freshman or a senior. The school randomly surveys 10 freshmen and 10 seniors and asks them to rate how satisfied they are at the school on a scale of 1-10, where 10 is extremely satisfied and 1 is extremely dissatisfied. Using the collected data, calculate t.

Freshmen	Seniors
9	8
7	5
7	8
5	3
8	4
7	9
6	6
7	7
8	7
3	2