Perform an ANOVA test. Include the ANOVA table and an explanation of the results. An experiment was performed to determine the effect of four different chemicals on the strength of a fabric. These chemicals are used as part of the permanent press finishing process. Five fabric samples were selected, and a randomized complete block design was run by testing each chemical type once in random order on each fabric. The data are shown below. Test for differences in means using ANOVA with ?=0.01.
Fabric Sample
1 2 3 4 5
Chemical Type
1 1.3 1.6 0.5 1.2 1.1
2 2.2 2.4 0.4 2.0 1.8
3 1.8 1.7 0.6 1.5 1.3
4 3.9 4.4 2.0 4.1 3.4