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. If the test predicts that there is no oil, what is the probability after the test that the land has oil?

0.1698

0.2217

0.5532

0.7660

Answer 1

@ganeshie8

Answer 2

@saifoo.khan @texaschic101

Answer 3

the two events are independent
A = the land has oil
B = the kit is not accurate
P(A and B) = P(A) * P(B)

Answer 4

So how would I solve this
@jakashaka123

Answer 5

P(A∩K)

Answer 6

P(ANK)

Answer 7

???

Answer 8

Denote A to be the event that oil is present, so P(A)=0.45. Then P(A′), the complement of A, is 0.55.

Answer 9

Denote A to be the event that oil is present, so P(A)=0.45. Then P(A) the complement of A, is 0.55.

Answer 10

So is it C

Answer 11

i can put up too many parenthesis ...

Answer 12

Is it C

Answer 13

try B

Answer 14

@jakashaka123

Answer 15

just try b for b**** A** question

Answer 16

Are you sure??

Answer 17

yeh

Answer 18

its one of the 2 im in a class right now so

Answer 19

tell me which ones correct at the end