Premise: A rock climber checks his rope before holding on to the next spot on the rock .
Correct statement: It is probable that a rock climber rubs his hand along his rope .
Incorrect statement: There is almost no chance that a rock climber rubs his hand along his rope .
Correct statement: It is probably not the case that the climber is on a mountain .
Incorrect statement: We believe that the climber is on a mountain .
Correct statement: It is probably the case that a rock climber is trying to make his way up a mountain , checking his rope with every step .
Incorrect statement: Chances are slight that a rock climber is trying to make his way up a mountain , checking his rope with every step .
Correct statement: It is highly likely that a man carefully climbs a rock .
Incorrect statement: It is impossible that a man carefully climbs a rock .
Correct statement: We believe that a rock climber is on a mountain .
Incorrect statement: It is unlikely that a rock climber is on a mountain .