Suppose you believe that students from your campus text more than most students. You collect data from 15 students about the number of texts they sent in the last hour and compare it to a national sample of students. After computing your t test, you found that t (14) = 2.20. Name the critical t value for each of the four possibilities below and state whether your results would be significant for a:
a) two-tailed test at the .05 criterion level
b) two-tailed test at the .01 criterion level
c) one-tailed test at the .05 level
d) one-tailed test at the .01 level