Level:
Project ID:
1003031101
Accepted:
1
Clonable:
1
So far Johnny has received the grades: \( 5 \), \( 3 \), \( 3 \), \( 3 \), \( 2 \), \( 2 \), \( 1 \), \( 1 \), for the math course in this school term. What another grade he needs to get so that the average of grades is lower than \( 2.5 \)?
(Assumption: All grades are of the same weight in grading scale of \( 1 \), \( 2 \), \( 3 \), \( 4 \), \( 5 \), where \( 1 \) is the best result.)
at worst \( 2 \)
at worst \( 3 \)
only \( 1 \)
The arithmetic mean can’t be less than \( 2.5 \) in any case.