Recall that you randomly called 10 different pump companies and got 10 (very!) preliminary bids, which the pump suppliers claim some annual operating cost savings due to increase power use efficiency. Your boss asks selection can be narrowed down, and b) whether using the 'average' pump specifications gives a viable option. Pump1Pump 2Pump 3 Pump 4 Pump 5 Pump 6 Pump 7 Pump 8 Pump 9 Pump 10 you to determine a) which of the pumps, if any, is a viable option based on the rate of return, so that the 6.97 6.75 12 1.487 1.087 0.527 7.55 6.79 6.82 8.23 7.73 8.49 6.65 7.6 Life 10 10 10 10 10 1.027 0.627 1.074 1.187 0.787 0.532 1.397 0.997 0.722 1.22 0.82 0.867 1.283 1.487 1.38 1.34 1.347 0.883 1.087 0.98 0.94 0.947 0.683 0.686 0.884 0.935 0.815