PROBLEM 4. What is a better design a 2*d replicated twice or an unreplicated 2°? O Resolution V replicated twice as the power is higher, you get a pure error estimate, and main effects, and two interactions are confounded with higher order terms. O The unreplicated full factorial design is desirable, because it does not have any confounding terms. O They are both equally desirable as they have the same number of runs,

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