Premise: A group of people , one holding a yellow and blue umbrella , are standing at the top of some stairs .
Correct statement: It is highly unlikely that a group poses for a photo
Incorrect statement: Chances are about even that a group poses for a photo
Correct statement: Chances are about even that a crowd prepares to descend a staircase in the rain .
Incorrect statement: It is certain that a crowd prepares to descend a staircase in the rain .
Correct statement: There is a very good chance that some people are expecting rain .
Incorrect statement: It is probably not the case that some people are expecting rain .
Correct statement: There is little chance that a group of co-workers wait at the top of the stairs , all huddled under one person 's umbrella .
Incorrect statement: It is almost certain that a group of co-workers wait at the top of the stairs , all huddled under one person 's umbrella .
Correct statement: There is a very good chance that there are women in the group .
Incorrect statement: It is unlikely that there are women in the group .