Answer:
Extracurricular participation and grade performance are related
Explanation:
The expected count of students with high extracurricular participation and good grades is the number of students that you would expect to see when extracurricular participation and grade performance are related.
Extracurricular activities are activities performed by students outside their regular course work at school , they can also be educational and when they are related to the students regular course at school it can lead to a good grade performance at school as well , hence the expected count of students with both high extracurricular participation and good grades.