Premise: These people are doing dangerous things .
Correct statement: It is impossible that people are riding motorcycles without helmets .
Incorrect statement: It is probably the case that people are riding motorcycles without helmets .
Correct statement: There is a better than even chance that these people enjoy danger
Incorrect statement: There is little chance that these people enjoy danger
Correct statement: We believe that young people doing dangerous things
Incorrect statement: It is impossible that young people doing dangerous things
Correct statement: It is impossible that these people are doing illegal things .
Incorrect statement: Chances are about even that these people are doing illegal things .
Correct statement: There is a better than even chance that there are people shooting at each other .
Incorrect statement: It is improbable that there are people shooting at each other .