The data in the following table represent time-study observations for an assembly process at Nagesh Murthy’s Toy Factory. On the basis of these observations, find the normal time for each element and the standard time for the process. Assume a 10% allowance factor.

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ELEMENT 1 2 3 st 4 PERFORMANCE RATING (%) 100 90 120 100 OBSERVATIONS (MINUTES) 4 1 2 3 1.5 1.6 1.4 2.3 2.5 2.1 1.7 1.9 1.9 3.5 3.6 3.6 5 0.1* 1.5 2.2 2.4 1.4 1.6 3.6 3.2