Coal-fired power plants used in the electrical industry have gained increased public attention because of the environmental problems associated with solid wastes generated by large-scale combustion ("Fly Ash Binders in Stabilization of FGD Wastes," J. of Environmental Engineering, 1998: 43-49). A study was conducted to analyze the influence of three factors-binder type (A), amount of water (B), and land disposal scenario (C) - that affect certain leaching characteristics of solid wastes from combustion. Each factor was studied at two levels. An un-replicated 23 experiment was run, and a response value EC50 (the effective concentration, in mg/L, that decreases 50% of the light in a luminescence bioassay) was measured for each combination of factor levels. The experimental data is given in the following table:

Carry out an appropriate ANOVA, and state your conclusions?

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Factor Response Run 23,100 43,000 71,400 76,000 37,000 33,200 17,000 16,500