4MA0 Foundation June 2014 Paper 2R Q21
21 Reeta has a biased dice.
Each time Reeta rolls the dice, the probability that she will get a six is 0.1
(a) Write down the probability that she will not get a six. (1)
Reeta rolls the dice 50 times.
(b) Work out an estimate for the number of times that she will get a six. (2)
| Scheme | Marks |
|---|---|
| 0.9 | B1 |
| (1) |
Notes
B1: accept 90% or \(\dfrac{9}{10}\) oe
| Scheme | Marks |
|---|---|
| 50 × 0.1 | M1 |
| 5 | A1 |
| (2) | |
| (Total 3 marks) |
Notes
M1: 50 × 0.1