Answer:
Joint probability of A and B is 0.3
Explanation:
Since we are given the probability of event A and the conditional probability P(B given A)
The joint probability is the likelihood of two events occurring at the same time. The joint probability is written as:
A∩B for two events A and B
As we know that:
P((B│A))=(A∩B)/P(A)
We can use the above formula to calculate the joint probability of A and B.
Using the formula,
P(A∩B)=P(A)*P(B│A)
=0.75*0.40
=0.3
So the joint probability of A and B is 0.3 ..