Higher June 2024 Paper 3 Q10
10 On a biased dice,
P(lands on 6) \(=\) 0.38
This dice is rolled 150 times.
How many times would you expect the dice not to land on 6 ? [3 marks]
| Answer | Mark | Comments |
|---|---|---|
| Alternative method 1 | ||
| \(1 - 0.38\) or 0.62 | M1 | oe |
| their \(0.62 \times 150\) | M1dep | oe implied by \(\dfrac{93}{150}\) |
| 93 | A1 | |
| Alternative method 2 | ||
| \(0.38 \times 150\) or 57 | M1 | oe |
| \(150 -\) their 57 | M1dep | oe implied by \(\dfrac{93}{150}\) |
| 93 | A1 | |
Additional guidance
| ‘93 out of 150’ on answer line | M1M1A1 |
| Ignore attempt to simplify \(\dfrac{93}{150}\) | M1M1A0 |
| \(\dfrac{93}{150}\) and 93 both on answer line | M1M1A0 |
| \(\dfrac{57}{150}\) | M1M0A0 |
| Do not allow a misread of any probability |