Question

A sample of legal costs ( in thousands of dollars) for school districts for two recent consecutive years is shown. At a = 0.05 is there a difference in the costs? Suggest a reason for the difference, if one exists.

Year 1 / 108, 36,65, 108, 87, 94, 10, 40

Year 2 / 138, 28, 67, 181, 97, 126, 18, 67