The number of students that that scored between 70 and 90 is 21 + 22 = 43 and since the total number of students is 71, the percentage of students who scored from 70 to 90 is
[tex]\frac{43}{71}\times100=60.6.[/tex]
To answer the second part of the question, we go through each of the choices one by one.
A majority of the students earned between 80 and 90 points on the final exam.
The number of students earning 80 - 90 points is indeed the highest, but it is not the majority; therefore, this is an incorrect choice.
The lowest score earned on the exam was 10.
More students earned C's (between 70 and 80 points ) than A's (at least 90 points)
The number of students that earned C's is 21 whereas the number that earned A's is 12; therefore, this choice is also a correct choice.
At least four students earned fewer than 40 points on the exam.
No. Only three students earned fewer than 50 points on the exam; therefore, this is an incorrect choice.
