The data below represent time study observations for an assembly operation. Assume a 7% allowance factor. What is the normal time for element 3?
Observations (times in minutes)
Element Performance Rating 1 2 3 4 5
1 100% 1.5 1.6 1.4 1.5 1.
5
2 90% 2.3 2.2 2.1 2.2 2.4
3 115% 1.7 1.9 1.9 1.4 1.6
4 100% 3.5 3.6 3.6 3.6 3.2
A) 1.7 min.
B) 1.96 min.
C) 2.11 min.
D) 10.1 min.
E) 11.2 min.
B
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