Premise: The boy is skateboarding on the bench by the fence .
Correct statement: There is a better than even chance that a boy wearing a helmet is on a skateboard .
Incorrect statement: Chances are slight that a boy wearing a helmet is on a skateboard .
Correct statement: There is a better than even chance that the boy is skateboarding over the bench on his way to the park .
Incorrect statement: Chances are slight that the boy is skateboarding over the bench on his way to the park .
Correct statement: Chances are about even that the kid is showing out for friends by doing tricks on a skateboard .
Incorrect statement: There is almost no chance that the kid is showing out for friends by doing tricks on a skateboard .
Correct statement: It is impossible that a boy is skateboarding in a competition .
Incorrect statement: There is a better than even chance that a boy is skateboarding in a competition .
Correct statement: Chances are slight that the boy is 12 years old .
Incorrect statement: It is certain that the boy is 12 years old .