Premise: Two people ride the train .
Correct statement: It is probably not the case that a couple rides a train .
Incorrect statement: It is almost certain that a couple rides a train .
Correct statement: There is a better than even chance that the train is long
Incorrect statement: It is improbable that the train is long
Correct statement: There is a better than even chance that people having a conversation on the train .
Incorrect statement: Chances are slight that people having a conversation on the train .
Correct statement: There is a better than even chance that two people are commuting on a train .
Incorrect statement: There is little chance that two people are commuting on a train .
Correct statement: It is probably not the case that two friends are riding the train together .
Incorrect statement: There is a very good chance that two friends are riding the train together .