Premise: A couple is playing outside in a park , one a man on a guitar and the other a lady on a violin .
Correct statement: It is unlikely that a band practicing for a concert .
Incorrect statement: It is certain that a band practicing for a concert .
Correct statement: Chances are about even that the couple are wearing pants .
Incorrect statement: It is impossible that the couple are wearing pants .
Correct statement: It is impossible that two people playing intruments entertain a crowd in a New York park .
Incorrect statement: There is a very good chance that two people playing intruments entertain a crowd in a New York park .
Correct statement: It is impossible that the couple is dancing while the band plays music .
Incorrect statement: It is probable that the couple is dancing while the band plays music .
Correct statement: It is probable that a couple is happily playing outside in a park .
Incorrect statement: Chances are slight that a couple is happily playing outside in a park .