4MA0 Foundation June 2017 Paper 2 Q8
8
impossible unlikely evens likely certain
(a) Write down a word from the box that best describes the likelihood of each outcome.
(i) A person chosen at random will have their birthday on 29 February.
(ii) The next baby born will be a girl.
(2)In a fridge, there are
4 strawberry yoghurts
2 peach yoghurts
5 cherry yoghurts
1 banana yoghurt
Sarah takes at random one of these yoghurts.
(b) Write down the probability that she takes
(i) a banana yoghurt,
(ii) a strawberry yoghurt or a cherry yoghurt,
(iii) a raspberry yoghurt.
(3)| Scheme | Marks |
|---|---|
| (i) unlikely | B1 |
| (ii) evens | B1 |
| (2) |
Notes
B1: cao
B1: cao
| Scheme | Marks |
|---|---|
| (i) \(\dfrac{1}{12}\) | B1 |
| (ii) \(\dfrac{9}{12}\) | B1oe |
| (iii) 0 | B1oe |
| (3) | |
| (5 marks) |
Notes
B1: or 0.083(3…)
B1oe: \(\dfrac{3}{4}\) or 0.75 or 75%
B1oe: NB. Penalise incorrect notation once only in (b) by deducting one mark