0.05 which meant that the critical t value would be 2.26 (9 df). Data analysis showed t(9)=2.84, p=.045. What do these results mean? Answers: a. There is insufficient information to determine if a significant difference exists between scores. b. There was not a statistically significant difference between the functional impairment scores obtained before and after the intervention. C. There was a statistically significant difference between the functional impairment scores obtained before and after the intervention