Foundation November 2019 Paper 2 Q23
23 The result of a game is Win, Lose or Draw.
After 80 games
relative frequency of the result Win is 0.4
relative frequency of the result Lose is 0.25
How many of the games had the result Draw? [3 marks]
| Answer | Mark | Comments |
|---|---|---|
| Alternative method 1 | ||
| \(1 - 0.4 - 0.25\) or 0.35 | M1 | oe fraction or percentage |
| their \(0.35 \times 80\) | M1dep | oe |
| 28 | A1 | |
| Alternative method 2 | ||
| \(0.4 \times 80\) or 32 and \(0.25 \times 80\) or 20 | M1 | oe eg \((0.4 + 0.25) \times 80\) or \(0.65 \times 80\) or 52 |
| \(80 -\) their \(32 -\) their 20 | M1dep | oe eg \(80 -\) their 52 |
| 28 | A1 | |
Additional guidance
| Answer 28 out of 80 | M1M1A1 |
| Answer \(\dfrac{28}{80}\) | M1M1A0 |
| Allow M1 even if not subsequently used | |
| 28 seen but answer given as 0.35 | M1M0A0 |