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Quiz7b_KEY_Sp11

# Quiz7b_KEY_Sp11 - B Name_KEY 6 April 2011 IE330 Spring 2011...

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Name: ______________KEY______________________ B 6 April 2011 IE330 Spring 2011 Closed book, closed notes, no calculators Quiz #7b For all questions, please refer to the ANOVA output shown below. (From Navidi, W. (2008). Statistics for Engineers and Scientists, 2 nd Edition . McGraw-Hill: New York) Shown below are ANOVA results from an experiment testing whether 3 different manufacturing factors or their interaction affect the thickness of the vinyl produced by the process. Assume thicker vinyl is better and that all assumptions of the ANOVA have been met. Analysis of Variance for Thickness of vinyl (mils), using Adjusted SS for Tests Source DF Seq SS Adj SS Adj MS F P Plasticizer Type 1 22.781 22.781 22.781 9.73 0.005 Rate of Extrusion 1 5.281 5.281 5.281 2.26 0.146 Temperature of Drying 1 11.281 11.281 11.281 4.82 0.038 Plasticizer Type*Rate of Extrusion 1 3.781 3.781 3.781 1.62 0.215 Plasticizer Type* 1 26.281 26.281 26.281 11.23 0.003 Temperature of Drying Rate of Extrusion* 1 0.781 0.781 0.781 0.33 0.569 Temperature of Drying Error 25 58.531 58.531 2.341 Total 31 128.719 S = 1.53011 R-Sq = 54.53% R-Sq(adj) = 43.61% Tukey 95.0% Simultaneous Confidence Intervals Response Variable Thickness of vinyl (mils)

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Quiz7b_KEY_Sp11 - B Name_KEY 6 April 2011 IE330 Spring 2011...

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