Premise: A young man leaps through the air from a rocky mountaintop .
Correct statement: It is impossible that a hiker jumps over a dangerous cavern .
Incorrect statement: It is certain that a hiker jumps over a dangerous cavern .
Correct statement: There is a better than even chance that a person jumping from mountain to mountain
Incorrect statement: Chances are slight that a person jumping from mountain to mountain
Correct statement: It is certain that a man is outside
Incorrect statement: There is almost no chance that a man is outside
Correct statement: It is improbable that a man is leaping towards the snow .
Incorrect statement: There is a better than even chance that a man is leaping towards the snow .
Correct statement: It is impossible that a man jumped when he saw a spider .
Incorrect statement: It is certain that a man jumped when he saw a spider .