I need to check my work. Please find probability that respondent is Senior or does not eat monthly at campus dining facility.

The data:

Year in school	Frequency of visit		For year in school:
1	5		1 = Freshman
1	4		2 = Sophomore
2	1		3 = Junior
1	1		4 = Senior
1	1
4	4
1	1		For Frequency of visit:
1	4		1 = Daily
1	5		2 = 2 or 3 times per week
1	3		3 = Weekly
3	5		4 = 2 or 3 times per month
1	3		5 = Once a month or less
3	5
1	1
4	5
2	1
4	4
3	5
1	3
4	1
3	1
2	1
2	1
2	5
3	2
2	5
2	2
2	1
2	1
4	3
4	5
4	3
4	2
4	3
3	1
3	1
2	1
2	2
3	1
4	3
2	1
2	5
4	1
3	1
4	1
4	2
3	2
2	3
3	5
4	1
1	2
4	2
2	2
1	5
1	1
1	5
2	5
3	3
2	2
4	1
2	1
3	1