Explanation:
Ignore P(A) = 0.22 as we don't need it.
The notation P(B|A) is the same as writing "P(B) given event A happened".
Since P(B|A) = 0.21 is different from P(B) = 0.24, this tells us that event A changes the probability P(B). Therefore event B is dependent on event A somehow. The chances of event B goes down if event A happens.
If A and B were independent, then both of these equations must be true
