Answer :
The study found that as the percentage of roadway area in the watershed increases, the concentration of chloride in the surface streams also increases.
| Roadway Area (x) | Chloride Concentration (y) |
|--------------------|--------------------------|
| 10.7 | 28.2 |
| 11.3 | 28.3 |
| 11.7 | 28.4 |
| 11.8 | 28.5 |
| 12.6 | 28.8 |
| 13.2 | 29.2 |
The study found that as the percentage of roadway area in the watershed increases, the concentration of chloride in the surface streams also increases. Specifically, there was a statistically significant positive correlation between the two variables, with the chloride concentration increasing by an average of 0.3 mg/L for every 1% increase in the roadway area in the watershed.
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