Premise: A boy grinds a ledge on his skateboard .
Correct statement: It is impossible that tony Hawk looks to impress the crowd
Incorrect statement: Chances are about even that tony Hawk looks to impress the crowd
Correct statement: There is a very good chance that boy riding skateboard at park
Incorrect statement: It is improbable that boy riding skateboard at park
Correct statement: It is probably the case that a boy is doing tricks .
Incorrect statement: It is probably not the case that a boy is doing tricks .
Correct statement: There is a better than even chance that a boy grinds a ledge on his skateboard and falls .
Incorrect statement: There is almost no chance that a boy grinds a ledge on his skateboard and falls .
Correct statement: It is highly unlikely that a boy competes in a skateboard competition .
Incorrect statement: It is almost certain that a boy competes in a skateboard competition .