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.
Answer to relevant QuestionsThrough separate calculations, verify the confidence interval for each of the factor-level means shown in the output for Exercise 12.79. In exercise An industrial sales manager, testing the effectiveness of three different sales presentations, randomly selected a presentation to be used when making the next sales call on 14 customers. The numbers of units purchased as a ...Researchers have obtained and tested samples of four different brands of nylon rope that are advertised as having a breaking strength of 100 pounds. Given the breaking strengths (in pounds) shown here, use the 0.025 level in ...In carrying out a chi-square goodness-of-fit test, what are the “k” and “m” terms in the “df = k – 1 – m” expression and why is each term present? For the data provided in Exercise 13.18, use the 0.05 level in testing whether the sample could have been drawn from a Poisson population with λ = 1.5. In exercise
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