Premise: a skateboarder grinds the rail .
Correct statement: It is highly unlikely that a tall skateboarder
Incorrect statement: There is a better than even chance that a tall skateboarder
Correct statement: There is a better than even chance that a skateboarder tries a new trick .
Incorrect statement: It is improbable that a skateboarder tries a new trick .
Correct statement: It is highly likely that the boy is playing on a skateboard .
Incorrect statement: We doubt that the boy is playing on a skateboard .
Correct statement: We doubt that the skateboarder has been grinding rails all morning .
Incorrect statement: There is a very good chance that the skateboarder has been grinding rails all morning .
Correct statement: There is a very good chance that a skateboarder is doing tricks at the skate park .
Incorrect statement: There is little chance that a skateboarder is doing tricks at the skate park .