Premise: Two young boys play besides a lake , throwing rocks into the water .
Correct statement: It is certain that a couple of boys throwing rocks .
Incorrect statement: It is unlikely that a couple of boys throwing rocks .
Correct statement: It is probably the case that two boys compete to see who can skip rocks across the lake better .
Incorrect statement: It is unlikely that two boys compete to see who can skip rocks across the lake better .
Correct statement: There is a better than even chance that the boys are wearing pants .
Incorrect statement: It is impossible that the boys are wearing pants .
Correct statement: There is almost no chance that two boys are skipping stones while they wait for their fathers to come back with the boat .
Incorrect statement: It is probably the case that two boys are skipping stones while they wait for their fathers to come back with the boat .
Correct statement: There is a very good chance that the boys are playing besides the lake on a sunny day .
Incorrect statement: Chances are slight that the boys are playing besides the lake on a sunny day .