Premise: A dozen workers wearing uniforms & sanitation hats are working on an assembly line in a factory .
Correct statement: There is a very good chance that there are some people doing quality control checks on an assembly line .
Incorrect statement: It is impossible that there are some people doing quality control checks on an assembly line .
Correct statement: It is impossible that a group of people are assembling the new iphones in a factory
Incorrect statement: It is likely that a group of people are assembling the new iphones in a factory
Correct statement: It is impossible that a group of workers are waiting for a meeting to begin .
Incorrect statement: It is certain that a group of workers are waiting for a meeting to begin .
Correct statement: It is impossible that the people are making automobile parts .
Incorrect statement: It is certain that the people are making automobile parts .
Correct statement: Chances are about even that a dozen workers wearing blue suits work in a factory .
Incorrect statement: It is certain that a dozen workers wearing blue suits work in a factory .