Show that call center access time is in statistical control

Assignment Help Other Subject

Reference no: EM131861398

Question: A critical dimension of the service quality of a call center is the wait time of a caller to get to a sales representative. Periodically, random samples of three customer calls are measured for time. The results of the last four samples are in the following table: Time (sec) Sample 1 2 3 1 501 490 488 2 509 498 487 3 503 492 496 4 497 507 487 Click the icon to view the table of factors for calculating three-sigma limits for the x- -chart and R-chart. Factors for calculating three-sigma limits for the x-- chart and R-chart Size of Sample(n) Factor for UCL and LCL for x-chart (A2) Factor for LCL forR-Chart (D3) Factor for UCL forR-Chart (D4) 2 1.888 0 3.267 3 1.023 0 2.575 4 0.729 0 2.282 5 0.577 0 2.115 6 0.483 0 2.004 7 0.419 0.076 1.924 8 0.373 0.136 1.864 9 0.337 0.184 1.816 10 0.308 0.223 1.777 a. Assuming that management is willing to use three-sigma control limits, and using only the historical information contained in the four samples, show that the call center access time is in statistical control. Since all the sample ranges are between UCLr =( )seconds and LCLr =( )seconds and all of the sample means are between UCL -x = ( ) seconds and LCL x- = ( ) seconds, the call center access time is in statistical control. (Enter your responses rounded to two decimal places.)

Reference no: EM131861398

Questions Cloud

Stock exceed the required return on the less risky stock : By how much does the required return on the riskier stock exceed the required return on the less risky stock?

Each check is needed to justify use of the lock-box system : What minimum reduction in the time to collect and process each check is needed to justify use of the lock-box system?

What are the customer privacy risks : What are the customer privacy risks, besides the ones mentioned in the case, that Amazon.com must guard against in order to continue to grow its business?

Callable bonds generally-what is the rate of inflation : Callable bonds generally. The nominal rate of return on the bonds of Stu's Boats is 6.00 percent. What is the rate of inflation?

Show that call center access time is in statistical control : A critical dimension of the service quality of a call center is the wait time of a caller to get to a sales representative.

Stock beta and stock required rate of return : What is the stock's beta? If the market risk premium increased to 8%, what would happen to the stock's required rate of return?

Explain how supply chains are structured : Describe different way in which an organization may choose a supply chain and logistics management to compete in the marketplace.

Calculate the volatility by first calculating the variance : calculate the volatility by first calculating the variance e.g. x^2 Var (R2) - 1.25(0.26)^2, which we can then square root to find our volatility?

What is diversity of citizenship : Critical legal thinking: What is diversity of citizenship? What is the public policy for recognition diversity of citizenship jurisdiction of federal courts?

User Account

All Pages