Premise: The ball boys are waiting on the side lines of the tennis court while they watch the lady hitting the ball .
Correct statement: There is a very good chance that a lady is playing tennis against an opponent .
Incorrect statement: Chances are slight that a lady is playing tennis against an opponent .
Correct statement: Chances are about even that ball boys eager await their chance to run on the court in front of the huge crowd .
Incorrect statement: It is highly unlikely that ball boys eager await their chance to run on the court in front of the huge crowd .
Correct statement: It is impossible that two boys are smoking cigarettes by the tennis court , watching the lady play tennis .
Incorrect statement: There is a better than even chance that two boys are smoking cigarettes by the tennis court , watching the lady play tennis .
Correct statement: It is probable that the lady hits the ball hard .
Incorrect statement: It is probably not the case that the lady hits the ball hard .
Correct statement: It is improbable that the ball boys are checking out the attractive lady tennis player .
Incorrect statement: It is certain that the ball boys are checking out the attractive lady tennis player .