A plane has crashed in an unknown location, but it was initially thought that there was a 40-percent chance (probability 0.4) that it had crashed over the sea and a 60-percent chance it had crashed on land. If it crashed on land there is a probability of 0.8 that a search will find it. If it crashed over the sea there is a probability of 0.3 that a search will find it. A search of land and sea has already been conducted and has failed to find the plane. What is the probability that it crashed on land? On sea? POLI967