Higher June 2017 Paper 3 Q3
3 The table shows some information about the dress sizes of 25 women.
| Dress size | Number of women |
|---|---|
| 8 | 2 |
| 10 | 9 |
| 12 | 8 |
| 14 | 6 |
(a) Find the median dress size. (1)
3 of the 25 women have a shoe size of 7
Zoe says that if you choose at random one of the 25 women, the probability that she has either a shoe size of 7 or a dress size of 14 is \(\dfrac{9}{25}\) because
\[\frac{3}{25} + \frac{6}{25} = \frac{9}{25}\](b) Is Zoe correct?
You must give a reason for your answer. (1)
You must give a reason for your answer. (1)
| Answer | Mark | Notes |
|---|---|---|
| 12 | B1 | cao |
| Answer | Mark | Notes |
|---|---|---|
| Explanation | C1 | No with statement about not being mutually exclusive events eg a person could be in both categories |