A researcher investigated whether there is a difference in the primary commuting method used by employees based on where they live. They surveyed employees arriving at a large business park on a Tuesday morning. They categorized employees by residential area ("Urban" or "Suburban") and recorded whether they commuted using sustainable transport (e.g., walking, cycling, train, bus) or a private car.
| Commuting Method | Urban Residents | Suburban Residents |
|---|---|---|
| Sustainable transport | 21 | 6 |
| Private car | 9 | 24 |
Outline one conclusion that can be obtained from this study from the data presented in this table.