Question: 6.18. The effect estimates from a 24 factorial design are as follows: ABCD $!1.5138, ABC $!1.2661, ABD $!0.9852, ACD $ !0.7566, BCD $ !0.4842, CD

6.18. The effect estimates from a 24 factorial design are as follows:

ABCD $!1.5138, ABC $!1.2661, ABD $!0.9852, ACD $ !0.7566, BCD $ !0.4842, CD $ !0.0795, BD

$ !0.0793, AD $ 0.5988, BC $ 0.9216, AC $ 1.1616, AB $ 1.3266, D $ 4.6744, C $ 5.1458, B $ 8.2469, and A $ 12.7151. Are you comfortable with the conclusions that all main effects are active?

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