Marks
2
3
4
5
6
7
8
9
No. of students
3
4
1
0
4
5
2
1
The table above shows the distribution of marks of students in a test. Find the probability of passing the test if the pass mark is 5?
A
\(\frac{3}{5}\)
B
\(\frac{2}{5}\)
C
\(\frac{7}{20}\)
D
\(\frac{1}{5}\)
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
Total number of students = 20
Marks
No. of students
5
0
6
4
7
5
8
2
9
1
12
Pr(passing) = \(\frac{12}{20}\)
= \(\frac{3}{5}\)
Source: Myschool Past Questions Archive (Record #9491)