The bar chart above shows the scores of some students in a test. Use it to answer this question
If one student is selected at random, find the probability that he/she scored at most 2 marks
- \(\frac{11}{18}\)
-
\(\frac{11}{20}\)
- \(\frac{7}{22}\)
- \(\frac{5}{19}\)
The correct answer is: B
Explanation
at most 2 marks = 5 + 2 + 4 students = 11 students
probability(at most 2 marks) = \(\frac{11}{20}\)