An IE at AAM collects the following data related to the Actuator assembly line f

Question

An IE at AAM collects the following data related to the Actuator assembly line from an operator running at a rate of 95%. How many cycles need to be collected to obtain a 5% accuracy and 95% Confidence. How does this number compare to the General Electric Recommended Number of Observation Cycle Chart (Table 10.2)? What is the standard time for the data given in problem 3, if a 10% personal allowance of a work day and 10% delay allowance for a work day is expected in this department? Based on the data provided in question 3 and 4, what is expected throughput of a single 8-hour shift? The department average per shift lately has dropped to 300 pieces per shift. If the root efficiency of drops below 65%, the company requires the IE department to investigate the cause. Is an investigation necessary in this case?

Explanation / Answer

3. Here E=0.05 and z=1.96

Also mean=49.48 and sd=2.54

Also we know E=z*sd/sqrt(n)

So n=(z*sd/E)^2=9914

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