BUSN Operations Research - Problem

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Problem 7-3

A time study was conducted on a job that contains four elements. The observed times and performance ratings for six cycles are shown in the following table.


OBSERVATIONS (minutes per cycle)

Element Performance
Rating
1 2 3 4 5 6
1 90%   0.44   0.50   0.43   0.45   0.45   0.46  
2 85   1.50   1.58   1.47   1.51   1.49   1.52  
3 110   0.84   0.89   0.77   0.83   0.88   0.80  
4 100   1.10   1.14   1.08   1.15   1.16   1.26  

a.

Determine the average cycle time for each element. (Round your answers to 3 decimal places.)


 Element  Average cycle  
 1  
 2  
 3  
 4  
 
b.

Find the normal time for each element. (Round your answers to 3 decimal places.)


 Element  Normal time  
 1  
 2  
 3  
 4  

c.

Assuming an allowance factor of 16 percent of job time, compute the standard time for this job. (Round your answers to 3 decimal places.)

   Element  Standard time    1    2    3    4  

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