1MA0 Higher June 2013 Paper 2 Q4
4 Rhiana plays a game.
The probability that she will lose the game is 0.32
The probability that she will draw the game is 0.05
Rhiana is going to play the game 200 times.
Work out an estimate for the number of times Rhiana will win the game. (3)
| Answer | Mark | Notes |
|---|---|---|
| 126 | 3 | M1 for \(1 - 0.05 - 0.32\) (= 0.63) M1 for ‘0.63’ \(\times 200\) A1 cao OR M1 for \(0.05 \times 200\) (= 10) or \(0.32 \times 200\) (= 64) or \(0.37 \times 200\) (=74) M1 for 200 – ‘10’ – ‘64’ A1 cao OR M1 for \(100 - 5 - 32\) (= 63) M1 for \(\dfrac{\text{``}63\text{''}}{100} \times 200\) A1 cao SC: B2 for \(\dfrac{126}{200}\) as the answer. |