4. Five specimens of each of five brands of denim material used in making blue jeans are subjected to a friction test. A measure of wear is determined for each specimen. The manufacturer wants to know if there are differences among the materials in how they wear. The lower the friction test, the better the wear. The following table presents the results ACME |CHAMP| AJAX TUFFY XTRA 2.3 2.2 2.2 2.4 2.6 2.1 2.3 2.0 2.7 2.5 2.4 2.4 2.3 2.6 2.9 2.5 2.6 2.1 2.3 2.4 2.2 2.5 2.2 2.5 2.7 a) Write out the linear additive model for this study and define the terms (5 points) + b) Fill in the following ANOVA Table (Fill all boxes that are completely blank) (6 points) Source Df SS Treatment MS F 0. 629600 Error 0 . 500000 Total points) c) Based on your results and an 0=0.05, circle the correct F value you need to use to compare your calculated F (1 Fo.as A.20 = 2.866, Fox,4 20 = 3.515, Foos4,Is = 3.056, Fanss,Is = 2.901 d) Based on your results what can you conclude based on the manufacturer's original question? (5 points)