The article ??Anodic Fenton Treatment of Treflan MTF?? (D. Saltmiras and A. Lemley, Journal of Environmental Science and Health, 2001:261??274) describes a two-factor experiment designed to study the sorption of the herbicide trifluralin. The factors are the initial trifluralin concentration and the Fe²:H₂O₂delivery ratio. There were three replications for each treatment. The results presented in the following table are consistent with the means and standard deviations reported in the article.

a. Estimate all main effects and interactions.

b. Construct an ANOVA table. You may give ranges for the P-values.

c. Is the additive model plausible? Provide the value of the test statistic, its null distribution, and the P-value.

Transcribed Image Text:

Initial Delivery Ratio Concentration (M) Sorption (%) 15 1:0 10.90 8.47 12.43 15 1:1 3.33 2.40 2.67 15 1:5 0.79 0.76 0.84 15 1:10 0.54 0.69 0.57 40 1:0 6.84 7.68 6.79 40 1:1 1.72 1.55 1.82 40 1:5 0.68 0.83 0.89 40 100 1:10 1:0 0.58 1.13 1.28 6.61 6.66 7.43 100 1:1 1.25 1.46 1.49 100 1:5 1.17 1.27 1.16 100 1:10 0.93 0.67 0.80