ANSWER
17%
EXPLANATION
First we have to complete the table by adding the rows and columns:
There are 30 students in total, 5 of which are seniors.
The probability that a random selected student is a senior is the number of seniors divided by the total number of students:
[tex]P(\text{senior})=\frac{5}{30}=\frac{1}{6}\approx0.17[/tex]
To transform this to a percent we just have to multiply by 100: 17%
