course is work study and ergonomics

A continuous stop watch time study was conducted on a shaping operation that consists of 5 elements as shown in the table below. Note: Au reaaings in the tabie above are in munutes. Q1- Assuming 3\% personal and fatigue allowances and 2% Delay allowances, find the standard time to produce one unit? Q2- How many units can be produced per week, assuming 8 hours of work/day and 5 working days per week? Q3- Calculate the required number of observations for the first, second and the last element (i.e. for load machine, Run and Material handling clements)? Use 10 percent precision. Hint: N1=(i=1Nxis20Nj=1nxi,2(i=1Nxwi)2)2 for i =1,2,5