Final answer:
The complements of different events involving students' GPA higher than 2.7.
Step-by-step explanation:
Part 1 of 4: The complement of exactly 12 students having a GPA higher than 2.7 is the number of students having a GPA lower than or equal to 2.7.
Part 2 of 4: The complement of at least 12 students having a GPA higher than 2.7 is the number of students having a GPA lower than 2.7.
Part 3 of 4: The complement of more than 12 students having a GPA higher than 2.7 is the number of students having a GPA less than or equal to 12.
Part 4 of 4: The complement of fewer than 12 students having a GPA higher than 2.7 is the number of students having a GPA greater than or equal to 12.