sampled weekly to check the performance quality of the department. To establish a entative norm for the department, one sample of 1000 units was collected each week for 10 weeks, with these results: Sample Sample Size Number of Forms with Error Week-1 1000 74 Week-2 1000 42 Week-3 64 Week-4 84 40 50 1000 1000 Week-5 1000 Week-6 1000 Week-7 1000 Week-8 1000 Week-9 1000 Week-10 1000 10000 65 66 40 75 600 1) Develop upper and lower control limits for p-Chart using a 99.7% confidence nterval. ) Is the process under control? Why yes? Why Not?

sampled weekly to check the performance quality of the department. To establish a entative norm for the department, one sample of 1000 units was collected each week for 10 weeks, with these results: Sample Sample Size Number of Forms with Error Week-1 1000 74 Week-2 1000 42 Week-3 64 Week-4 84 40 50 1000 1000 Week-5 1000 Week-6 1000 Week-7 1000 Week-8 1000 Week-9 1000 Week-10 1000 10000 65 66 40 75 600 1) Develop upper and lower control limits for p-Chart using a 99.7% confidence nterval. ) Is the process under control? Why yes? Why Not?

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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Burger Doodle is a fast-food restaurant that processes anaverage of 680 food orders each day. The average cost of each order is $6.15. Four percent of the orders are incor-rect, and only 10% of the defective orders can be corrected with additional food items at an average cost of $1.75. Theremaining defective orders have to be thrown out.a. Compute the average product cost.b. In order to reduce the number of wrong orders,Burger Doodle is going to invest in a computerizedordering and cash register system. The cost of thesystem will increase the average order cost by $0.05and will reduce defective orders to 1%. What is theannual net cost effect of this quality-improvementinitiative?c. What other indirect effects on quality might be realizedby the new computerized order system?
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1. Twenty samples, each consisting of 100 admission applications at a university, resulted in a total of 80 applications that had some type of error. Compute the control limits for a p-chart. What would be the impact on the final results if each sample contained 200 loan applications rather than 100 and all other data remained the same? Please show in detail these impacts quantitatively in your answers.
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