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Marks 2 3 4 5 6 7 8 9 No. of students 3 4 1...

Mathematics
JAMB 2009

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. \(\frac{1}{5}\)
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Correct Answer: Option A
Explanation

Total number of students = 20

Marks No. of students
5 0
6 4
7 5
8 2
9 1
  12

 

Pr(passing) = \(\frac{12}{20}\)

= \(\frac{3}{5}\)

 

 

 

 

 

There is an explanation video available below.


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