The article “An Assessment of the Effects of Treatment, Time, and Heat on the Removal of...

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: 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 α = .01for each test, and state your conclusions (assume fixed effects for all three factors).