Foundation November 2021 Paper 1 Q13
13 A biased five-sided spinner is numbered 1, 2, 3, 4 and 5.
The table shows the probability of the spinner landing on 1, 2 and 4.
| Number | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|
| Probability | 0.10 | 0.10 | 0.20 |
The spinner is four times more likely to land on 5 than on 3.
Complete the table. [4]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 0.12 0.48 | 4 | B3 for 0.12 OR M2 for \(1 - (0.1 + 0.1 + 0.2)\) soi by 0.6 in working or two values in the table which sum to 0.6 or M1 for \(0.1 + 0.1 + 0.2\) soi by 0.4 in working M1 for their \(0.6 \div 5\) | Accept percentages or fractions |