Consider a parent who knew these results and way choosing between two schools. One which has PM2.5(AQI) = 80 on bad days and PM2.5(AQI) = 40 on good days and one which always had PM2.5(AQI) = 60. Show plausible indifference curves for these choices for a risk-averse parents and tell me how frequent "bad days" would need to be to make that parent indifferent between these two schools.