1) A researcher hypothesizes that graduate students in some fields enjoy life more than graduate students in other fields. She conducts a survey of graduate students in three fields (political science, economics, and prychology) to assess their sense of wellbeing. Her scale ranges from 1 (Extremely Unhappy] to 7 (Extremely Happy) Political Science Economics Psychology 4 A] What is the mean in each group? Political Science Economics Porchology. B) Sum of squares? 55 C) Mean Squirm? Dj Calculated I-Scores 1) Can we reject the null hypothesis of no difference between fields