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 oil and the test predicts it?

A.
0.09

B.
0.11

C.
0.36

D.
0.44

Answer 1

0.36

Explanation:

0.45 x 0.80

= 0.36

Answer 2

In this case you the probabilities can be multiplied similarly to if you flipped a coin twice. .45 * .80 = .36