Jason inherited a piece of land from his great-uncle. Owners in the area claim that there is a 45% chance that the land has oil. Jason decides to test the land for oil. He buys a kit that claims to have an 80% accuracy rate of indicating oil in the soil. If the test predicts that there is no oil, what is the probability after the test that the land has oil?

Question

dumbcow · Answer

.45 * 0.2

anonymous · Answer

Thats not an answser @dumbcow

anonymous · Answer

@dumbcow These are the answer choices:

0.1698

0.2217

0.5532

0.7660

dumbcow · Answer

sorry i do not know the answer ... we know that there is a 20% chance test is wrong
so answer must be either A or B