Higher January 2022 Paper 2R Q8
8 A scientist is investigating the weight of 50 tigers.
Here is some information about these tigers.
| Type of tiger | ||
|---|---|---|
| Siberian | Bengal | |
| Number of tigers | 22 | 28 |
| Mean weight of tigers (kg) | 260 | |
The mean weight of all 50 tigers is 218 kg
Work out the mean weight of the Bengal tigers.
(3)
| Scheme | Marks |
|---|---|
| 22 × 260 (= 5720) or 50 × 218 (= 10 900) | M1 |
| \(\dfrac{\text{‘}{10900}\text{’} - \text{‘}{5720}\text{’}}{28}\left(= \dfrac{5180}{28}\right)\) | M1 |
| 185 | A1 |
| (3) | |
| (3 marks) |