Premise: The pedestrian sign has a bolt through it on the top and bottom .
Correct statement: There is a better than even chance that the sign is on a tall metal pole
Incorrect statement: It is impossible that the sign is on a tall metal pole
Correct statement: We believe that the traffic symbol is mounted .
Incorrect statement: There is little chance that the traffic symbol is mounted .
Correct statement: It is certain that the sign is held up by some bolts .
Incorrect statement: It is unlikely that the sign is held up by some bolts .
Correct statement: There is a very good chance that the pedestrian sign was put up by construction workers
Incorrect statement: There is almost no chance that the pedestrian sign was put up by construction workers
Correct statement: It is certain that the sign is secured to the pole .
Incorrect statement: Chances are about even that the sign is secured to the pole .