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 that there is no oil?

Answer 1

@gnorris

Answer 2

A : 0

Answer 3

alright lets see

Answer 4

B : 0.09

Answer 5

C :0.11

Answer 6

D :0.44

Answer 7

oh jeez im stuck on this one

Answer 8

Do you know anyone who can help me?

Answer 9

The probability that the land has oil is 45 %
the probability of a bad test is 20%
9% is the probability

Answer 10

and no sorry i dont but thats all i got

Answer 11

So it's B?

Answer 12

@kittiwitti1

Answer 13

...I actually suck at this problem.... I don't know if this is the right formula, but I think you multiply the percentages (80% chance to detect the 45%, so 80% x 45%) ?? x_x

Answer 14

I'm sorry > <

Answer 15

Do you know someone who could help me?

Answer 16

Ok, Thanks :)

Answer 17

np, I will stay here so I learn something new too lol

Answer 18

Yeah, it's new for me too haha

Answer 19

The answer is B : 0.09 @kittiwitti1

Answer 20

Well then the other guy got it right, give him the medal lol

Answer 21

I will, thank you :)

Answer 22

np :-)
good luck with the rest of your math! ^-^

Answer 23

lol i'm a girl by the way an glad i could help sorry for the really long reply twenty hours later

Answer 24

It's okay, you still helped him so good job :-) @gnoris

Answer 25

oops I mean @gnorris