2. An ad agency tracks the complaints, by week received, about the billboards in its city: WeekNo. of Complaints1 42 53 4415 36 97 48 59 4102111 312 9 What type of control chart would you use to monitor this process and why?What are the three-sigma control limits for this process? Assume that the historical complaint rate is unknown.Is the process mean in control, according to the control limits? Why or why not?Assume now that the historical complaint rate has been four calls a week. What would the three-sigma control limits for this process be now? Is the process in control according to the control limits?

Answered: 2. An ad agency tracks the…

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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An ad agency tracks the complaints, by week received, about the billboards in its city:

Week	No. of Complaints
1	4
2	5
3	4
4	1
5	3
6	9
7	4
8	5
9	4
10	21
11	3
12	9

What type of control chart would you use to monitor this process and why?
What are the three-sigma control limits for this process? Assume that the historical complaint rate is unknown.
Is the process mean in control, according to the control limits? Why or why not?
Assume now that the historical complaint rate has been four calls a week. What would the three-sigma control limits for this process be now? Is the process in control according to the control limits?

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