=9.14. Reconsider the Goferbroke Co. case study, including its analysis in Sections 9.6 and 9.7. With the help of the consulting geologist, Jennifer Flyer now has obtained some historical data that provides more precise information than Max could supply on the likelihood of obtaining favorable seismic soundings on similar tracts of land. Specifically, when the land contains oil, favorable seismic soundings are obtained 80 percent of the time. This percentage changes to 40 percent when the land is dry.