4MA0 Higher June 2011 Paper 3 Q4
4 Every morning, Samath has one glass of fruit juice with his breakfast.
He chooses at random orange juice or pineapple juice or mango juice.
The probability that he chooses orange juice is 0.6
The probability that he chooses pineapple juice is 0.3
(a) Work out the probability that he chooses mango juice. (2)
(b) There are 30 days in April.
Work out an estimate for the number of days in April on which Samath chooses orange juice. (2)
Work out an estimate for the number of days in April on which Samath chooses orange juice. (2)
| Scheme | Marks |
|---|---|
| 1 − (0.6 + 0.3) | M1 |
| 0.1 | A1 |
| (2) |
Notes
A1: Also accept \(\frac{1}{10}\) or 10%
| Scheme | Marks |
|---|---|
| 30 × 0.6 | M1 |
| 18 | A1 |
| (2) | |
| (Total 4 marks) |
Notes
A1: cao Do not accept \(\frac{18}{30}\)