1. A sample of psychology students in MSU-IIT was part of a study that examined their happiness level using a 9-point Likert scale. The mean from a previous study on the happiness level of the general population of MSU-IIT was 6.4. Determine whether the current sample has significantly higher levels of happiness as compared to the general population of MSU-IIT students. These are the scores of the sample: 8, 4, 6, 3, 6, 5, 8. Significance level = .05