Two factors are thought to influence the deposition rate (seconds) for a pulse laser to deposit one monolayer of material. Initially, a \(2^{2}\) design was run with two factors: spot size \(50 \mathrm{~mm}\) or \(60 \mathrm{~mm}\) and laser energy \(1.5 \mathrm{~J} / \mathrm{cm}^{2}\) or \(2.0 \mathrm{~J} / \mathrm{cm}^{2}\).

Summarize the experiment according to the visual procedure. Interpret the effects based on confidence intervals.

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Spot Size Laser Energy Rep. I Rep. 2 8.34 7.44 5.20 4.96 7.01 7.09 1 4.45 4.73