Refer to Table S6.1 Factors for Computing Conitrol Char Uimis i3 sigma) for this problem. West Bnttery Corp. has recenty been roceling complarts trom retallors that its 9 voll batteries are not lasting as long as other name brands. James West, head of the TQM program at Westh Austin plart, belives there is no problem because his batlaries have had an average life of 60 hours, about 10\%s longer than compe:tlors' models. To raise the fifeline abeve this lovel would io a nmw level of technology not arvailablo to West. Nevertholows, he is concemed enough to sot up hourly assembly line checks, Previously, after ensuring that the process was running properly. took sarples of 5 g-volt batterles for 25 teat to establish the standerds for control chart limts. Those 25 bosts are ahown in the following table: This exercise conteine only perts a and 6 . a) For bie gven dass, the x = houn (round your metponse to three cecmal paces)