The graph shown is based on more than 170,000 interviews done by Gallup that took place from January through December 2012. The sample consists of employed Americans 18 years of age or older. The Emotional Health Index Scores are the sample space. We randomly sample one Emotional Health Index Score. If we know an Emotional Health Index Score is 81.5 or more, what is the probability that it is 82.7? (Round your answer to four decimal places.)