4400 Higher November 2009 Paper 3 Q8
8 James throws a biased dice once.
The table shows all the possible scores and their probabilities.
| Score | Probability |
|---|---|
| 1 | 0.4 |
| 2 | 0.3 |
| 3 | 0.1 |
| 4 | 0.1 |
| 5 | 0.05 |
| 6 | 0.05 |
Find the probability that the score is more than 3
(2)
| Scheme | Marks |
|---|---|
| 0.1 + 0.05 + 0.05 or 1 − (0.4 + 0.3 + 0.1) | M1 |
| 0.2 | A1 |
| (2) | |
| (2 marks) |