The quality engineer at Kolex is also trying to decide whether a newer, more costly design involving a gold alloy in a microchip is more effective than the current, less expensive silicon design. The engineer also believes that to obtain an effective output voltage, the temperature and signal levels (low or high) are also important factors. The engineer is also hesitant about using the very expensive gold alloy in the new design. The data found in the Excel file Kolex-Part IV.xls were gathered in testing of all combinations. Calculate the main effects and interaction effects for all factors. Which main effects and interaction effects are important? What recommendations would you make? Kolex Electronics Temperature Low Output Voltage 7 Signal Low High Low Material Silicon Silicon Gold 16 Low Low 8 High Gold 18 Silicon 14 Low High Silicon Low High High High High Low High Gold Gold 10 11 12