Expenditures per Pupil The per-pupil costs (in thousands of dollars) for cyber charter school tuition for school districts in three areas of southwestern Pennsylvania are shown. At a = 0.05, is there a difference in the means? If so, give a possible reason for the difference. (The information in this exercise will be used in Exercise 5 of Section 12-2.) Area I Area II Area III 6.2 7.5 5.8 9.3 8.2 6.4 6.8 8.5 5.6 6.1 8.2 7.1 6.7 7.0 3.0 6.9 9.3 3.5 Source: Tribune-Review