Premise: An elderly man with his hands placed upon some kind of barrel in a truck yard .
Correct statement: There is a better than even chance that there is an elderly man who is picking up the barrel to deliver it somewhere .
Incorrect statement: It is improbable that there is an elderly man who is picking up the barrel to deliver it somewhere .
Correct statement: There is a very good chance that an elderly man is using a barrel to assist him in standing .
Incorrect statement: We doubt that an elderly man is using a barrel to assist him in standing .
Correct statement: It is probably not the case that the old man is in his truck .
Incorrect statement: It is probable that the old man is in his truck .
Correct statement: We believe that an older man leans on a barrel outside in a truck yard .
Incorrect statement: It is probably not the case that an older man leans on a barrel outside in a truck yard .
Correct statement: Chances are about even that he is a trucker
Incorrect statement: It is impossible that he is a trucker