Question: An experiment has been conducted to examine main and interactive effects of factor A (keyboard configuration, 3 levels) and factor B (word processing package, 2

An experiment has been conducted to examine main and interactive effects of factor A (keyboard configuration, 3 levels) and factor B (word processing package, 2 levels). Each cell consists of two replications, representing the number of minutes each of two secretaries randomly assigned to that cell required to type a standard document. Interpret the accompanying computer output for this study, including your conclusion (use the 0.05 level) for each null hypothesis associated with the experiment.

Two-Way Analysis of Variance Analysis of Variance for MINUTES Source KEYBOARD ORDPACK Interaction 2 0.9117 0.4558 Error Total DF MS 2 0.6450 0.3225 1 0.2133 0.2133 5.53 3.66 7.82 0.043 0.021 6 0.3500 0.0583 11 2.1200 Individual 95% CI KEYBOARD Mean 2.83 2.38 2.10 2.40 2.70 3.00 3.30 Individual 95% CI WORDPACK Mean 2.567 2.833 2.400 2.600 2 2.800 3.000

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