Table 5 reports average household MWTP for models without and with covariates, which were estimated with Eqs. (7) and
(8), respectively. Confidence intervals (95% level) were estimated by the method described by Efron and Tibshirani (1986)
using 500 bootstrap repetitions, and highlight that all average household MWTP estimates are statistically significantly
different from zero. Eq. (8) adjusted the estimates from the model with covariates to be representative of the county as a
whole and it is only these estimates that are considered throughout the remainder of this paper. Table 5 indicates large
differences in MWTP between attributes. For example, the average household in Flathead County is only willing to pay
$0.24 per annum for the next 10 years to avoid one home evacuation per year for the next 10 years. However, the average
household is willing to pay $13.28 per annum for the next 10 years to avoid one unhealthy smoke day per year for the next
10 years