Question 1 Report
| Marks | 1 | 2 | 3 | 4 | 5 |
| Number of students | \(m + 2\) | \(m - 1\) | \(2m - 3\) | \(m + 5\) | \(3m - 4\) |
The table shows the distribution of marks scored by some students in a test.
(a) If the mean mark is \(3\frac{6}{23}\), find the value of m.
(b) Find the : (i) interquartile range
(ii) probability of selecting a student who scored at least 4 marks in the test.
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