A researcher hypothesized that people are more likely to be aggressive when they are criticized than when they are not. The researcher randomly assigned participants to one of two groups: 1) in group 1 participant's essay was given a negative rating, and 2) in group 2 participant's essay was given a positive rating. Then the researcher monitored how many loud blasts participants delivered in a confederate's earphones in the next room. One person dropped out of the study, so that there were 8 people in treatment condition 1 (n1 = 8} and 7 people in treatment condition 2 (n2 = 7). The alpha was .05. The mean number of blasts for Group 1 was 6.8 (SS = 80) and the mean number of blasts for Group 2 was 3.5 (55 = 76). Is this a directional or non-directional hypothesis? 7' non-directional " directional