Question 5

A Moving to another question will save this response. > 8 Question 5 10 points Save Answer The following table shows the average quality scores for production, averaged according to which supplier (A, B, or C) provided the materials and which shift (day, night, or swing) was active at the time the part was produced; this is followed by the computer version of the ANOVA table. For this experiment, there were five observations for each combination (a combination specifies both supplier and shift). Note that the last row (and column) represents the averages of the numbers in their column (and row), respectively (eg, 82.42 is the average quality for Supplier A across all shifts). Day Shift Night Shift Swing Shift Average Supplier A 77.06 93.12 77.06 82.42 Supplier B 81.14 88.13 78.11 82.46 X Supplier C 82.02 81.18 79.91 1.04 Average 80.08 87.48 78.36 81.97 Analysis of Variance for Quality Source DE SS MS P Shift 2 704.07 352.04 11.93 0.000 Supplier 2 19.60 9.80 0.33 0.720 Shift* supplier 430.75 107.69 3.65 0.014 Error 36 1,062.05 29.50 Total 44 2,216.47 Average Quality Scores and ANOVA Table a. Compare the overall average for supplier A to that for suppliers B and C. Does it appear that there are large differences (more than two or three quality points) among suppliers? b. Are the average supplier scores significantly different? How do you know? For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIUS Paragraph Arial 14px ... Priv Tern