In Mount Kenya University, 80 masters' students in the School of Social Sciences sit for Statistics Course every semester. Out of the six departments in the school, The Psychology Department claims that its students perform better in the Statistics Unit than the rest of the students. If the proportion of the students who passed with at least 'C' out of a possible 'A' is 0.73 and the proportion of students from Psychology Department consisting of 14 students is 0.46 (who passed with at least a 'C' grade). Is the claim by the Psychology Department true?