No one will
a random sample of students from the seventh and eighth grades are asked whether they walk to school. the results of this survey are shown in the table.

student grade walks?
1 7 y
2 7 n
3 8 n
4 8 n
5 8 n
6 7 y
7 8 y
8 8 n
9 7 n
10 7 n
enter numbers in the boxes so that the two-way table represents these results.
walk to school?

yes no
grade 7

grade 8