The management of an oil company is trying to decide whether to drill for oil in a particular field in the Gulf of Mexico. It costs the company $600 thousand to drill in the selected field. The management believes that if oil is found in this field, its estimated value will be $3400 thousand. At present, this oil company believes that there is a 45% chance that the selected field actually contains oil. Before drilling, the oil company can hire a team of geologists to perform seismographic tests at a cost of $55 thousand. Based on similar tests in other fields, the tests have a 25% false negative rate (no oil predicted when oil is present) and a 15% false positive rate (oil predicted when no oil is present). A. Assume the oil company wants to maximize its expected net earnings. Please utilize decision tree analysis to determine its optimal strategy. B. Calculate the expected value of the information (EVI/EVSI) provided by the team of geologists. C. Calculate and interpret EVPI for this decision tree problem.   i tried but i got stuck...

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The management of an oil company is trying to decide whether to drill for oil in a particular field
in the Gulf of Mexico. It costs the company $600 thousand to drill in the selected field. The
management believes that if oil is found in this field, its estimated value will be $3400 thousand. At
present, this oil company believes that there is a 45% chance that the selected field actually contains
oil. Before drilling, the oil company can hire a team of geologists to perform seismographic tests at a
cost of $55 thousand. Based on similar tests in other fields, the tests have a 25% false negative rate
(no oil predicted when oil is present) and a 15% false positive rate (oil predicted when no oil is
present).

A. Assume the oil company wants to maximize its expected net earnings. Please utilize decision
tree analysis to determine its optimal strategy.
B. Calculate the expected value of the information (EVI/EVSI) provided by the team of
geologists.
C. Calculate and interpret EVPI for this decision tree problem.

 

i tried but i got stuck...

 

$600
Drill X
No drill
Hire deo
1260
0.45
oil
·$0
231.51
x = 1260
2800
+
0.55 --330
no oil X (600)
tve
-ve
2318.51
195
drill
2318.51
no drill
drill
no drill
$0
195
$0
dill -600
011 3400
test-55
0.85 X 2333.25
oll 2745
+
=-98.25
0.15
no oil
0.25 = 686.25
X
2745
0.75
no oil
X
(655)
+
= -491.25
X
(655)
Transcribed Image Text:$600 Drill X No drill Hire deo 1260 0.45 oil ·$0 231.51 x = 1260 2800 + 0.55 --330 no oil X (600) tve -ve 2318.51 195 drill 2318.51 no drill drill no drill $0 195 $0 dill -600 011 3400 test-55 0.85 X 2333.25 oll 2745 + =-98.25 0.15 no oil 0.25 = 686.25 X 2745 0.75 no oil X (655) + = -491.25 X (655)
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