Premise: Two construction workers sitting on some pipes while one waves , obscuring his face .
Correct statement: Chances are about even that two workers are messing around on the job .
Incorrect statement: It is impossible that two workers are messing around on the job .
Correct statement: Chances are about even that two men sit down to each lunch
Incorrect statement: It is certain that two men sit down to each lunch
Correct statement: It is likely that the workers are wearing hard hats .
Incorrect statement: There is almost no chance that the workers are wearing hard hats .
Correct statement: It is probable that the workers are wearing helmets .
Incorrect statement: It is impossible that the workers are wearing helmets .
Correct statement: There is a better than even chance that the workers are wearing orange .
Incorrect statement: There is little chance that the workers are wearing orange .