You are evaluating a clinical intervention that supposedly decreases the number of incidents of misbehavior conducted by a group of children with a behavioral disorder. The average number of incidents of misbehavior in this population of children is 13 per year. The standard deviation is unknown. A sample of 15 children who were exposed to the clinical intervention engage in an average of 11 incidents of misbehavior per year with a standard deviation of 3.34. Test at an alpha = .05. Answer questions 2 - 5 with this information. The degrees of freedom for determining the critical t value = ___________. 13 14 11 12