The speeds, in mph, of 18 cars passing a speed camera are recorded below.
| 32 | 35 | 41 | 47 | 30 | 38 |
| 42 | 49 | 51 | 55 | 33 | 37 |
| 40 | 44 | 46 | 50 | 31 | 39 |
Draw an ordered stem and leaf diagram to show this information.
Key:
One car is chosen at random. Work out the probability that this car was travelling at more than 45 mph.
