Premise: A young man sitting by a dumpster on a sidewalk playing the guitar .
Correct statement: It is probably the case that a young man is practicing playing the guitar
Incorrect statement: It is unlikely that a young man is practicing playing the guitar
Correct statement: There is little chance that a man is playing country music for some loose change .
Incorrect statement: It is likely that a man is playing country music for some loose change .
Correct statement: Chances are about even that a man is playing the guitar because he 's trying to make money .
Incorrect statement: It is highly unlikely that a man is playing the guitar because he 's trying to make money .
Correct statement: It is probably not the case that a young man with long hair strums his guitar .
Incorrect statement: It is certain that a young man with long hair strums his guitar .
Correct statement: Chances are about even that the man is playing guitar and has his case open for tips .
Incorrect statement: It is impossible that the man is playing guitar and has his case open for tips .