The yield, in pounds, of three types of heritage tomatoes (treatments) is obtained after planting them in three equal sized plots within a site (block). Types are randomly assigned to plots. A total of four different sites are used. Suppose the data are

(a) Provide a decomposition for the observations from this randomized block experiment.
(b) Find the sum of squares for each array.
(c) Determine the degrees of freedom by checking the constraints for each array.

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Block Treatment 3 35 24 28 21 19 144 13 21 16 21 14