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? a. 0.1698 b. 0.2217 c. 0.5532 d. 0.7660

This is a Bayes Theorem Problem

P(oil | negative test) P(negative test)= P(negative test | oil) P(oil)

P(oil | negative test) = P(negative test | oil) P(oil) / P(negative test)

P(oil | negative test) =P(negative test | oil) P(oil) / ( P(negative test | oil) P(oil) + P(negative test | no oil) P(no oil) )

We're given the prior probability of oil, P(oil)=.45, so P(no oil)=.55

We given P(negative test | no oil) = 0.80, so P(negative test | oil) = .20

Choice A

the fist one is not equalvalent but i think th second one isand the third isnt definetly or the last one is i think. hope this !

step-by-step explanation:

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2