The article "An Assessment of the Effects of Treatment, Time, and Heat on the Removal of Erasable Pen Marks from Cotton and Cotton/Polyester Blend Fabrics (J. of Testing and Eval., 1991: 394-397) reports the following sums of squares for the response variable degree of removal of marks: SSA = 39.171, SSB = .665, SSC = 21.508, SSAB = 1.432, SSAC = 15.953, SSBC = 1.382, SSABC = 9.016, and SSE = 115.820. Four different laundry treatments, three different types of pen, and six different fabrics were used in the experiment, and there were three observations for each treatment-pen-fabric combination. Perform an analysis of variance using a = .01 for each test, and state your conclusions (assume fixed effects for all three factors)?