Problem 13.26 The data in the following table come from a complete 23 factorial exper[1]iment to study the effect of cutting speed (A), tool geometry (B), and cutting angle (C) on the life of a machine tool. Two levels of each factor were chosen and there were three replicates for each factor-level combination. Treatment Replicates Combination 1 22, 31, 25 a 32, 43, 29 b 35, 34, 50 ab 55, 47, 46 c 44, 45, 38 ac 40, 37, 36 bc 60, 50, 54 abc 39, 41, 47