Managing for Quality and Performance Excellence 9th Edition by James Evans,William Lindsay

Exercise 42

Note: Data sets for many problems in this chapter are available in the Excel workbook C06Data.xlsx on the Student Companion Site. Click on the appropriate worksheet tab as noted in the problem (e.g., Prob. 6-1) to access the data. In addition, the spreadsheet templates illustrated in the chapter are also available to aid in solving many of these problems.
The process engineer at Sival Electronics is also trying to determine whether a newer, more costly design involving a gold alloy in a computer chip is more effective than the present, less expensive silicon design. She wants to obtain an effective output voltage at both high and low temperatures, when tested with high and low signal strength. She hypothesizes that high signal strength will result in higher voltage output, low temperature will result in higher output, and the gold alloy will result in higher output than the silicon material. She hopes that the main and interaction effects with the expensive gold will be minimal. The data found in the worksheet Prob. 6-25 in the Excel workbook C06Data were gathered in testing of all combinations. What recommendation would you make?