Several laboratory technicians in a hospital are responsible for running the highly automated "Chemistry 12" blood profile text. An experienced technician was monitored over a two-week period (70 hours). The analyst studying the job found that the technician performed 412 blood profile tests, working 60 percent of the time and idle the rest. Some idleness was due to waiting for the automated equipment to complete the test. The technician was rated at 85 percent, but the analyst was uncertain about this rating because of the automated equipment. Allowances are set at .10.
a) Determine a standard time for a standard blood profile test.
b) How could the analyst be more certain about the worker rating?