Premise: A biker in motorcycle trials runs through the mud of the circuit , eyes focused on the road ahead .
Correct statement: It is likely that the biker is gearing up for a race .
Incorrect statement: It is improbable that the biker is gearing up for a race .
Correct statement: It is certain that the biker is wearing a helmet .
Incorrect statement: It is improbable that the biker is wearing a helmet .
Correct statement: There is little chance that the biker is not yet experienced .
Incorrect statement: It is certain that the biker is not yet experienced .
Correct statement: There is a very good chance that a man rides a motorcycle
Incorrect statement: Chances are slight that a man rides a motorcycle
Correct statement: It is certain that while in a race a bikers eyes is focused on the road .
Incorrect statement: It is highly unlikely that while in a race a bikers eyes is focused on the road .