The following data on power consumption in electric furnace heats (kW consumed per ton o...

The following data on power consumption in electric furnace heats (kW consumed per ton of melted product) resulted from a 2⁴ factorial experiment with three replicates (“Studies on a 10-cwt Arc Furnace,” J. of the Iron and Steel Institute, 1956: 22). The factors were nature of roof (A, low/high), power setting (B, low/high), scrap used (C, tube/plate), and charge (D, 700 lb/1000 lb).

Construct the ANOVA table, and test all hypotheses of interest using α = .01