Continuation of Problem 8.6. In Problem 6.6, we found that all four main effects and the two-factor

Question:

Continuation of Problem 8.6. In Problem 6.6, we found that all four main effects and the two-factor AB interaction were significant. Show that if the alternate fraction

(I = −ABCD) is added to the 24−1 design in Problem 8.6 that the analysis of the results from the combined design produce results identical to those found in Problem 6.6.

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