A) Determine the upper and lower control limits? B) Is the booking process out of statistical control? C) Plot the control chart.
A) Determine the upper and lower control limits? B) Is the booking process out of statistical control? C) Plot the control chart.
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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![The operations manager of the booking service department of Hometown Bank is concerned
about the proportion of wrong customer account recorded by Hometown personnel. Each week
a random sample of 2500 deposits is taken, and the number of incorrect account numbers is
recorded. The results for the past 12 weeks are shown in the following table. Use a three sigma
control unit
A) Determine the upper and lower control limits?
B) Is the booking process out of statistical control?
C) Plot the control chart.
Sample
1
2
3
4
5
LO
6
7
8
9
10
11
2
12
Wrong account
15
12
19
2
19
4
24
7
10
17
15
3
Please show all steps and equations used in Excel](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8aca326f-324e-4173-b188-192d48e02cc0%2Fac55b557-062e-4b89-ac9b-9994b92da683%2F1zgj3gv_processed.png&w=3840&q=75)
Transcribed Image Text:The operations manager of the booking service department of Hometown Bank is concerned
about the proportion of wrong customer account recorded by Hometown personnel. Each week
a random sample of 2500 deposits is taken, and the number of incorrect account numbers is
recorded. The results for the past 12 weeks are shown in the following table. Use a three sigma
control unit
A) Determine the upper and lower control limits?
B) Is the booking process out of statistical control?
C) Plot the control chart.
Sample
1
2
3
4
5
LO
6
7
8
9
10
11
2
12
Wrong account
15
12
19
2
19
4
24
7
10
17
15
3
Please show all steps and equations used in Excel
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