Answer:
(a) Students not liking any sports= 7
(b) Students liking exactly one sports= 21
Step-by-step explanation:
Mrs. Grady surveyed 30 students.
11 of which said they liked basketball, 14 of which said they liked hockey, and 2 of which said they liked both sports.
Total students liking sports= 9+2+12
= 23
(a) Students not liking any sports= 30-23
= 7
(b) Students liking exactly one sports= 9+12
= 21