Premise: Young boys with backpacks walking down a street .
Correct statement: It is highly likely that two boys walk down the street
Incorrect statement: It is unlikely that two boys walk down the street
Correct statement: It is impossible that some boys walk home from school .
Incorrect statement: It is highly likely that some boys walk home from school .
Correct statement: It is probable that a couple of children are going to school .
Incorrect statement: It is improbable that a couple of children are going to school .
Correct statement: Chances are about even that young boys with backpacks walking down the street to a camp .
Incorrect statement: It is almost certain that young boys with backpacks walking down the street to a camp .
Correct statement: Chances are about even that the young boys are heading home after school .
Incorrect statement: It is highly unlikely that the young boys are heading home after school .