Question: The effect of five different ingredients ( \(A\), \(B\), \(C\), \(D\), \(E\) ) on the reaction time of a chemical process is being studied. Each batch of new material is only large enough to permit five runs to be made. Furthermore, each run requires approximately \(1 \frac{1}{2}\) hours, so only five runs can be made in one day. The experimenter decides to run the experiment as a Latin square so that day and batch effects may be systematically controlled. She obtains the data that follow. Analyze the data from this experiment (use \(\alpha=0.05\) ) and draw conclusions.

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