Premise: The skateboarder in the white shirt balances on the ledge as the others look on in the background .
Correct statement: It is unlikely that the skateboarder is at a skate competition .
Incorrect statement: It is highly likely that the skateboarder is at a skate competition .
Correct statement: It is impossible that the skateboarder was balancing on the ledge because he was a pro-skateboarder
Incorrect statement: Chances are about even that the skateboarder was balancing on the ledge because he was a pro-skateboarder
Correct statement: It is highly unlikely that the man is twenty
Incorrect statement: It is probably the case that the man is twenty
Correct statement: There is a better than even chance that people are watching a person on a skateboard on a clear day .
Incorrect statement: There is little chance that people are watching a person on a skateboard on a clear day .
Correct statement: It is unlikely that the skater is in a competition .
Incorrect statement: It is almost certain that the skater is in a competition .