Foundation January 2022 Paper 2R Q18
18 A tin contains tea bags with a choice of four different flavours of tea.
The four flavours of tea are Assam or Darjeeling or Nilgiri or Rize.
Sara takes at random a tea bag from the tin.
The table shows each of the probabilities that the flavour of the tea Sara takes is Assam or Darjeeling or Rize.
| Flavour of tea | Assam | Darjeeling | Nilgiri | Rize |
|---|---|---|---|---|
| Probability | 0.38 | 0.24 | 0.16 |
(a) Work out the probability that the flavour of the tea Sara takes is Nilgiri. (2)
(b) Work out the probability that the flavour of the tea Sara takes is either Darjeeling or Rize. (2)
| Scheme | Marks |
|---|---|
| 1 – (0.24 + 0.16 + 0.38) oe | M1 |
| 0.22 | A1 |
| (2) |
Notes
A1: oe
| Scheme | Marks |
|---|---|
| 0.24 + 0.16 (= 0.4) oe | M1 |
| 0.4 | A1 |
| (2) | |
| (4 marks) |
Notes
A1: oe