Premise: A security guard on watch duty at the museum .
Correct statement: It is highly likely that the person is alert .
Incorrect statement: It is impossible that the person is alert .
Correct statement: It is highly likely that the museum holds valuable paintings and artifacts .
Incorrect statement: It is highly unlikely that the museum holds valuable paintings and artifacts .
Correct statement: Chances are about even that the museum is closed
Incorrect statement: It is impossible that the museum is closed
Correct statement: Chances are about even that the museum is closed .
Incorrect statement: It is impossible that the museum is closed .
Correct statement: There is a very good chance that the security guard is protecting artwork .
Incorrect statement: It is highly unlikely that the security guard is protecting artwork .