Answer:
6(5)+(2)5
Step-by-step explanation:
Answer:
0.36 = 36% probability that the land has oil and the test predicts it
Step-by-step explanation:
Conditional Probability
We use the conditional probability formula to solve this question. It is
![P(B|A) = \frac{P(A \cap B)}{P(A)}](https://tex.z-dn.net/?f=P%28B%7CA%29%20%3D%20%5Cfrac%7BP%28A%20%5Ccap%20B%29%7D%7BP%28A%29%7D)
In which
P(B|A) is the probability of event B happening, given that A happened.
is the probability of both A and B happening.
P(A) is the probability of A happening.
45% chance that the land has oil.
This means that ![P(A) = 0.45](https://tex.z-dn.net/?f=P%28A%29%20%3D%200.45)
He buys a kit that claims to have an 80% accuracy rate of indicating oil in the soil.
This means that ![P(B|A) = 0.8](https://tex.z-dn.net/?f=P%28B%7CA%29%20%3D%200.8)
What is the probability that the land has oil and the test predicts it?
This is
. So
![P(B|A) = \frac{P(A \cap B)}{P(A)}](https://tex.z-dn.net/?f=P%28B%7CA%29%20%3D%20%5Cfrac%7BP%28A%20%5Ccap%20B%29%7D%7BP%28A%29%7D)
![P(B \cap A) = P(B|A)*P(A) = 0.8*0.45 = 0.36](https://tex.z-dn.net/?f=P%28B%20%5Ccap%20A%29%20%3D%20P%28B%7CA%29%2AP%28A%29%20%3D%200.8%2A0.45%20%3D%200.36)
0.36 = 36% probability that the land has oil and the test predicts it
The function domain: x<0 or 0<x<4 or x>4 (?) I believe....
Answer:
i think its b
Step-by-step explanation:
If the dolphins are fed half a bucket of fish then half of that would be a quarter, therefore the sea otters are fed 1/4 of a bucket.