2 6 7 4 4 4 5 6 4 4 7 7 7 14 3 9 13 4 23 5 4. Installing mufflers at the O'Sullivan Garage in Golden, Colorado, involves five work elements. Jill O'Sullivan has timed workers performing these tasks seven times, with the results shown in the following table, Performance Observation (minutes) Element Rating 1 3 5 Select correct muffler 105% 6 16 Remove old muffler 95% 6 8 Weld/install new muffler 110% 14 13 15 15 12 Check/inspect work 100% 5 2 17 Complete paperwork 135 % 5 7 9 7 B 6 Employee has lengthy conversations with boss (not job related). By agreement with her workers, Jill allows a 14% fatigue factor and a 12% personal-time factor. To compute the standard time for the work operation, Jill excludes all observations that appear to be unusual or nonrecurring. She does not want an error more than 5%. (Round all intermediate calculations to two decimal places before proceeding with further calculations.) The normal time for the overall process = minutes (round your response to two decimal places). a) The standard time for this process - minutes (round your response to two decimal places) b) The number of observations that are required for a 99% contidence level within 5% accuracy - observations (round your response to the immediate Higher whole number)