what is the probability of earthquake given that tsunami has occured?
In order for a tsunami caused by a seaquakes to occur, following things have to happen:
1: The Earthquake must measure at least 7,0 on the Richter scale.
2: The sea bed must be lifted or lowered by the earthquake. If the sea bed is displaced sidewards, no tsunami will occur .
So, If the tsunami has occured then earthquake would have definitely occured.
Therefore, required probability=1