Premise: A dog jumps off the stairs .
Correct statement: There is a better than even chance that a dog is playing on a staircase .
Incorrect statement: It is impossible that a dog is playing on a staircase .
Correct statement: There is a better than even chance that a large dog is jumping down the stairs .
Incorrect statement: There is little chance that a large dog is jumping down the stairs .
Correct statement: There is a better than even chance that a small brown dog jumps off the stairs .
Incorrect statement: It is improbable that a small brown dog jumps off the stairs .
Correct statement: It is impossible that a puppy is leaping off of a staircase .
Incorrect statement: Chances are about even that a puppy is leaping off of a staircase .
Correct statement: There is a better than even chance that a dog is jumping down the stairs to greet it 's owner .
Incorrect statement: There is little chance that a dog is jumping down the stairs to greet it 's owner .