high quality oil = .50
medium quality oil = .20
no oil = .30
what is the probability of finding oil?
high quality oil = .50
medium quality oil = .20
no oil = .30
what is the probability of finding oil?
50% of high quality oil
20% of medium quality oil
= 70%
or
100% - 30% of no oil = 70%
However you like it...
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