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Question: an initial time study was done on a process with...

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An initial time study was done on a process with the following results​ (in minutes). Based on the data obtained so​ far, assuming an allowance of 14 percent of the normal​ time, what do you estimate for the time per customer​ served, based on this preliminary​ sample? ​(Round all intermediate calculations to two decimal​ places.)

Element

Performance

Rating

Obs

1

Obs

2

Obs

3

Obs

4

Obs

5

Element 1

70

3  

4     

4        

3        

3

Element 2

110

9  

8

10

11

   10

Element 3

120

  7

   8

    6

    7

     8

The time per unit customer served is    minutes. ​(Enter your response rounded to two decimal​ places.)

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