Premise: A boat worker holding a rope .
Correct statement: Chances are about even that a boat worker is holding a rope before launching .
Incorrect statement: It is impossible that a boat worker is holding a rope before launching .
Correct statement: Chances are about even that the worker is rolling a up rope from a boat .
Incorrect statement: It is certain that the worker is rolling a up rope from a boat .
Correct statement: It is impossible that a man in blue overalls is holding a large rope with an anchor attached
Incorrect statement: There is a very good chance that a man in blue overalls is holding a large rope with an anchor attached
Correct statement: It is probably not the case that the boat is about to be docked by the worker .
Incorrect statement: There is a very good chance that the boat is about to be docked by the worker .
Correct statement: It is probably not the case that the worker waits for the boat to come along side the dock .
Incorrect statement: It is highly likely that the worker waits for the boat to come along side the dock .