Premise: Two rock and roll performers on stage playing their guitars performing in front of a crowd .
Correct statement: Chances are slight that two performers play before a sold out crowd .
Incorrect statement: It is almost certain that two performers play before a sold out crowd .
Correct statement: It is probably not the case that a band is playing a slow ballad to a swarm of adoring fans .
Incorrect statement: It is certain that a band is playing a slow ballad to a swarm of adoring fans .
Correct statement: It is probably not the case that one is male and one is female .
Incorrect statement: It is probable that one is male and one is female .
Correct statement: It is impossible that a group of friends watching there friends play music
Incorrect statement: It is likely that a group of friends watching there friends play music
Correct statement: There is almost no chance that two rock and roll performers play their guitars during the main event of a large music festival .
Incorrect statement: It is highly likely that two rock and roll performers play their guitars during the main event of a large music festival .