Premise: A boy wearing a bike helmet , jeans , and a striped shirt and a girl wearing a green shirt and jeans ride bikes with training wheels down a sidewalk .
Correct statement: Chances are about even that the children are racing their bikes
Incorrect statement: It is almost certain that the children are racing their bikes
Correct statement: It is probably the case that the boy is trying to learn how to stabilize riding on a bike
Incorrect statement: We doubt that the boy is trying to learn how to stabilize riding on a bike
Correct statement: There is a very good chance that the boy is learning how to ride a bike .
Incorrect statement: It is unlikely that the boy is learning how to ride a bike .
Correct statement: It is almost certain that a boy and girl are learning to ride their bikes .
Incorrect statement: It is highly unlikely that a boy and girl are learning to ride their bikes .
Correct statement: It is almost certain that two children are learning how to ride their bikes .
Incorrect statement: It is impossible that two children are learning how to ride their bikes .