The following residuals and predicted values were obtained from an experiment that related yield of a chemical process \((y)\) to the initial concentration \((x)\) of a component (the time order of the experiments is given in parentheses):

Examine the residuals for evidence of a violation of the assumptions.

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Predicted Residual Predicted Residual 4.1 (5) 3.2 (9) 3.5 (13) 4.3 (1) 3.3 (7) 4.6 (14) 3.6 (8) -2 3.5 (3) 0 -3 133150 4.0 (12) 3 4.2 (4) -2 3.9 (11) 4.3 (2) 3.7 (10) 3.2 (6) -5 2250 1