A worker performs a repetitive assembly task at a workbench to assemble products. Each product consists of 20 components. Various hand tools are used in the task. The standard time for the work cycle is 7.5 min, based on using a PFD allowance factor of 10%. If the worker completes 70 product units during an 8-hour shift, determine (a) worker efficiency. (b) If the worker took only one rest break, lasting 15 min, and experienced no other interruptions during the 8 hours of shift time, determine her worker performance.

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