Use the file Landowner_Gas_Exploration_39.xlsx and PrecisionTree add-in to create a
decision tree with Excel and perform a sensitivity analysis on the optimal decision,
letting each of the five inputs vary one at a time plus or minus 25% from its base value
Suppose the landowner cpuld request a perfectly reliable soundings test on the site where natural gas is believed to be present. what is the most the land owner should be willing to pay for this test?