Fill-in: 10. A professor was interested in whether the average Final Grade for her class of 140 students in spring 2016 was any different from the years prior to 2016. Read the SPSS output below and use it to answer the following questions. a) What was the mean final grade for this year's class? (1 pt) b) What was the population mean final grade from previous years? (1 pt) c) Is there a significant difference between this year's class and previous years? Just using the SPSS output, how do we know? (2 pts) One-Sample Statistics N Mean Std. Deviation Std. Error Mean Final Grade 140 84.7697 13.65590 1.15413 One-Sample Test Test Value = 85 95% Confidence Interval of the Mean Difference Sig. (2-tailed) Difference Lower Upper Final Grade -.200 139 842 -.23029 -2.5122 2.0516