c) Installing muffers involves five work elements as given in Table Q8(c) provided in the [4] following page. According to the company policy, a 10% fatigue factor and a 10% personal time factor are allowed. The company excludes all observations that appear to be unusual or nonrecurring. The company does not want an error more than 5%. Page 7 of 8 Job Elements Table Q8(c) Cycle Time (in minutes) 3 4 5 Performance Rating (%) 1 2 6 7 4 5 4 6 4 15 4 110 6 8 7 6 7 6 7 90 15 14 14 12 15 16 105 Select correct muffers Remove old muffer Weld/Install new muffer Check/Inspect work Complete paperwork 5 3 4 24 5 4 3 18 100 5 6 8 7 6 7 130 i) Measure the standard time for the task. ii) Recommend the number of cycles that are needed to assure a 95% confidence level