D Question 5 4 pts An aluminum master alloy manufacturer produces grain refiners in ingot form. The company produces the product in four furnaces. Each furnace is known to have its own unique operating characteristics, so any experiment run in the foundry that involves more than one furnace will consider furnaces as a nuisance variable. The process engineers suspect that stirring rate affects the grain size of the product. Each furnace can be run at four different stirring rates. ANOVA for RCBD was performed and the following table illustrates the summary: Sources of Sum of df Mean Square F Variation p-value Squares Stirring rate 22.187 3 7.39583 0.853 0.4995 Furnaces 165.188 3 55.0625 6.348 0.01334 Error 78.0625 9 8.67361 Total 265.438 15 1. Based on the ANOVA table, what is the appropriate conclusion? [ Select ] 2. Has blocking been beneficial? [ Select ] A large law rm is studying whether four spreadsheets have the same appropriateness for their secretarial pool. All four spreadsheets are from nationally known software companies and hence are acceptable to the company with respect to quality of their output. The software consultant for the rm notes that the time to learn various subroutines in a spreadsheet depends on the individual secretary and the type of problem being analyzed. Since the secretaries involved in the study would be unavailable for normal work, the law rm decides to use only four secretaries from the pool and restricts the time that they can be away from their regular assignments. Thus the consultant decides to have each secretary complete a task involving one of four types of problems. The factors secretary and problem type are extraneous sources of variation that must be taken into account but are not of central importance to the consultant. The response variable will be the length of time required for the secretaryr to complete the assigned task. Each secretary will be assigned four problems. The data are as follows: Assuming that all assumptions are met to use a parametric test, an ANOVA test for LSD was performed. The following is the summary of the ANDVA table