CASE STUDY CHALLENGE
Probability: Student Performance Analysis
There are three categories of students in a class of 60 students:
- • A: Very hardworking students (6 students)
- • B: Regular but not so hard working (26 students)
- • C: Careless and irregular students (Rest of the class)
It is found that the probability of students unable to get good marks in the final year examination is:
- • Category A: 0.002
- • Category B: 0.02
- • Category C: 0.20
Answer the following:
| (i) | Find the probability that a student selected at random is unable to get good marks in the final examination. | [2] |
| (ii) | A student selected at random was found to be one who could not get good marks in the final examination. Find the probability that this student is NOT of category A. | [2] |