Premise: A kayaker wearing a blue wetsuit and black helmet paddles his yellow kayak in murky rolling rapids .
Correct statement: It is probably not the case that the man is trying to reach the end of the river
Incorrect statement: It is certain that the man is trying to reach the end of the river
Correct statement: There is a better than even chance that a man is maneuvering his kayak through rapids in a narrow canyon .
Incorrect statement: It is improbable that a man is maneuvering his kayak through rapids in a narrow canyon .
Correct statement: It is highly unlikely that a kayaker paddles down a Washington river .
Incorrect statement: It is probably the case that a kayaker paddles down a Washington river .
Correct statement: It is almost certain that the man is on the river
Incorrect statement: It is impossible that the man is on the river
Correct statement: Chances are about even that a kayaker is paddeling a kayak in rapids with a group of his friends in other kayaks .
Incorrect statement: It is certain that a kayaker is paddeling a kayak in rapids with a group of his friends in other kayaks .