Higher November 2020 Paper 2 Q3
3. Rashid plays a game.
Each time he can score 1 point, 5 points or 10 points.
The table shows the probability of each outcome.
| Points | Probability |
|---|---|
| 1 | 0·80 |
| 5 | 0·15 |
| 10 | 0·05 |
Rashid plays the game 40 times.
How many times does he expect to score more than 1 point? [3]
| Scheme | Marks | Comments |
|---|---|---|
| (1 – 0.8(0)) × 40 OR 40 – 0.8(0) × 40 OR (0.15 + 0.05) × 40 OR 0.15 × 40 + 0.05 × 40 | M2 | M1 for sight of one of the following:
|
| 8 | A1 | CAO |
| (3) |