Premise: A person taking a jump off a rock on a dirt bike .
Correct statement: It is almost certain that the person has a helmet on .
Incorrect statement: Chances are slight that the person has a helmet on .
Correct statement: It is probably the case that a man is showing off in front of his friends
Incorrect statement: It is improbable that a man is showing off in front of his friends
Correct statement: It is impossible that a dirt bike rider jumps the biggest rock he has ever done
Incorrect statement: It is probably the case that a dirt bike rider jumps the biggest rock he has ever done
Correct statement: It is probably the case that people watch him do the jump .
Incorrect statement: There is almost no chance that people watch him do the jump .
Correct statement: There is a better than even chance that a dirt biker jumps off a rock to impress his friends
Incorrect statement: Chances are slight that a dirt biker jumps off a rock to impress his friends