An experiment was performed to determine the effect of four

        1) 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 α=0.01.    Chemical Types     Fabric Samples 1 2 3 4   1 1.3 2.2 1.8 3.9   2 1.6 2.4 1.7 4.4   3 0.5 0.4 0.6 2   4 1.2 2 1.5 4.1   5 1.1 1.8 1.3 3.4    

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