Problem 11-34 suggests using In (s 2 ) as the response [refer to part (b)]. Does the

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Problem 11-34 suggests using In (s2) as the response [refer to part (b)]. Does the Box-Cox method indicate that a transformation is appropriate?


Problem 11-34

In Example 6-2 we found that one of the process variables (B = pressure) was not important. Dropping this variable produces two replicates of a 23 design. The data are shown below:

C D A (+) A (-) s2 45, 48 71, 65 57.75 121.19 68, 80 60, 65 68.25 72.25 43, 45 100, 104 73.00 1124.67 + 75, 70 86, 96 81.75 134.92

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