In a study of simulated juror decision making, Braden-Maguire, Sigal, and Perrino (2005) investigated the type of verdict assigned by study participants after they read a 12-page summation of a case involving a battered woman who had shot and killed her husband. Of the 80 participants, 27 assigned a verdict of guilty, 4 a verdict of not guilty by reason of self-defense, and four a verdict of not guilty by reason of insanity.
What type of chi-square test would the researchers use to determine whether the distribution of verdicts differed from what could have been expected by chance?