Puff 'n Stuff Services is a small company that assembles mailings for clients in the Atlanta area. Different sized envelopes are stuffed with various items such as coupons, advertisements, political messages, etc., by staff workers who are paid on a piece-rate basis. A time study of a job has been conducted by an engineering consulting firm using a subject performing the above task. The observations from the time study for four cycles of the three-element job and the performance rating for each element are given in the following table: Observations (minutes) T-Bar Work Element 1 2 3 4 F 1 0.12 0.10 0.12 0.09 0.11 1.15 2 0.13 0.14 0.16 0.15 1.3 0.15 0.10 3 0.09 0.09 0.08 0.09 1.2 a) What is the normal time for this job? b) Using an allowance factor of 20%, what is the standard time for this job? c) Was this table created using the continuous or the snapback method?? Describe the difference between the two methods