Premise: Two young boys giggling at life .
Correct statement: It is probably not the case that two boys tell an inside joke .
Incorrect statement: It is likely that two boys tell an inside joke .
Correct statement: Chances are about even that boys giggle like girls giggle
Incorrect statement: It is almost certain that boys giggle like girls giggle
Correct statement: Chances are about even that two young boys are sitting outside giggling .
Incorrect statement: There is almost no chance that two young boys are sitting outside giggling .
Correct statement: It is highly unlikely that two boys recount their life stories with joy .
Incorrect statement: There is a very good chance that two boys recount their life stories with joy .
Correct statement: Chances are about even that two boys are smiling in a classroom .
Incorrect statement: It is impossible that two boys are smiling in a classroom .