Expected frequency
number15 pts
The same table of 200 students:
| Transport | City | Countryside | Total |
|---|---|---|---|
| Car | 30 | 60 | 90 |
| Public transport | 70 | 15 | 85 |
| Bicycle | 20 | 5 | 25 |
| Total | 120 | 80 | 200 |
What is the expected frequency in the Car and Countryside cell if the mode of transport and the place of residence were unrelated?