Estimated willingness-to-pay (WTP) per household by strata, with 95% confidence interval. The overall value is derived from the weighted average values.
| Strata | WTP estimate | 95% confidence limits | |
|---|---|---|---|
| Less than 5,001 | $0.27 | −7.1714 | 7.7079 |
| Between 5,001 and 10,000 | $4.56 | −2.5242 | 11.6349 |
| Between 10,001 and 20,000 | $8.12 | 0.9479 | 15.2932 |
| Between 20,001 and 50,000 | $4.55 | −2.1668 | 11.2662 |
| Between 50,001 and 150,000 | $15.47 | 8.6045 | 22.3339 |
| Between 150,001 and 250,000 | $14.02 | 7.1761 | 20.8734 |
| St. Louis suburbs | $18.86 | 11.6397 | 26.0708 |
| Kansas City suburbs | $13.10 | 6.1119 | 20.0863 |
| St. Louis | $15.64 | 6.7245 | 24.5484 |
| Kansas City | $16.81 | 8.7434 | 24.8706 |
| Overall | $11.02 | 8.7340 | 13.3206 |