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Posted on May 15, 2024

Service agents in a mobile phone shop take an average of 2 0 minutes to set up a new customer contract, with a standard deviation

Service agents in a mobile phone shop take an average of

20

minutes to set up a new customer contract, with a standard deviation of

5

minutes. The upper tolerance level is set at

25

minutes and the lower tolerance level at

10

minutes. Calculate the capability ratio

(

.)

and the capability index

(

)

to determine if this process is in control.

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