BOD Tests. The data below are paired comparisons of BOD tests done in standard 300-mL bottles and experimental 60-ml bottles. Estimate the difference and the confidence interval of the difference between the results for the two bottle sizes. 300 mL 7.2 4.5 4.1 4.1 5.6 7.1 7.3 7.7 32 29 22 23 27 60 mL 4.8 4.0 4.7 3.7 6.3 8.0 8.5 4.4 30 28 19 26 28 Source: Mccutcheon, S. C., J. Env. Engr. ASCE, 110, 697-701. Please use three methods of t, a, x comparisons to solve the