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 the testing of all combinations. What recommendation would you make?

Problem 6-25
Sival Electronics
Signal	Material	Temperature	Output Voltage
Low	Silicon	Low	7
High	Silicon	Low	16
Low	Gold	Low	8
High	Gold	Low	18
Low	Silicon	High	14
High	Silicon	High	10
Low	Gold	High	11
High	Gold	High	12