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. What is the probability that the land has no oil and the test shows that it has oil?

0.09

0.11

0.36

0.44

Question

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. What is the probability that the land has no oil and the test shows that it has oil?

0.09

0.11

0.36

0.44

anonymous · Answer

I put in 0.80 and 0.45 in the formula but the results came up as 1.778 and none of my answer choices matches this. Can anyone help me with this?

anonymous · Answer

I know that it isn't 0.36. Anyone help?

anonymous · Answer

And now I know that it isn't 0.09. I got it wrong. Can anyone please help?