Quiz7a_KEY_Sp11 - A Name: _KEY_ 6 April 2011 IE330 Spring...

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Name: ______________KEY________________________ A 6 April 2011 IE330 Spring 2011 Closed book, closed notes, no calculators Quiz #7a 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 is ANOVA results from a testing program to determine the benefit of a new fertilizer regime on maple sugar production in Vermont. (Assume all assumptions of the ANOVA have been met.) A higher amount of sap produced is better. Analysis of Variance for Sap produced (mL), using Adjusted SS for Tests Source DF Seq SS Adj SS Adj MS F P Zone 2 239.12 239.12 119.56 11.99 0.000 Fertilizer Level 2 454.92 454.92 227.46 22.82 0.000 Zone*Fertilizer Level 4 108.72 108.72 27.18 2.73 0.062 Error 18 179.45 179.45 9.97 Total 26 982.20 S = 3.15741 R-Sq = 81.73% R-Sq(adj) = 73.61% Tukey 95.0% Simultaneous Confidence Intervals Response Variable Sap produced (mL) All Pairwise Comparisons among Levels of Fertilizer Level
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Quiz7a_KEY_Sp11 - A Name: _KEY_ 6 April 2011 IE330 Spring...

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