Upper and lower control limits, Operation Management

Assignment Help:

Clerks at Lotsa Data Systems key in thousands of insurance records each day for a variety of client firms.  The process is in control but CEO Donna Lotsa wants to be sure that at least 99.73% of the random variation in the data entry process is included in its control charts' control limits. Samples of the work of 20 clerks are shown in the table below. Lotsa examines 100 records entered by each clerk and counts the number of errors. She also computes the fraction defective in each sample.

Sample Number

Number of Errors

Sample Number

Number of Errors

1

6

11

6

2

5

12

1

3

0

13

8

4

1

14

7

5

4

15

5

6

2

16

4

7

5

17

11

8

3

18

3

9

3

19

0

10

2

20

4

 

 

TOTAL

80

a. What is the appropriate number of standard deviations to include in calculating the upper and lower control limits?

b. What are the upper and lower control limits?

c. Illustrate/state whether the process is in statistical control or not.


Related Discussions:- Upper and lower control limits

Explain memorial health system cpor implementation, Case Study---Memorial H...

Case Study---Memorial Health System CPOR Implementation. What is the typical IT implementation process? What are the roles and responsibilities involved in system implementation? H

Political risk for an organisation, Identify, with examples, groups that ma...

Identify, with examples, groups that may represent a significant political risk for an organisation that is considering engaging in Foreign Direct Investment.  When companies a

Explain what is the critical path, The following represents a project that ...

The following represents a project that should be scheduled using CPM: Time (DAYS) Activity Immediate Predecessors a m b A - 1 3 5 B - 1 2 3 C A 1 2 3 D A 2 3 4 E B 3 4 11 F

Explain cost of a project, illustrate how to effectively and efficiently re...

illustrate how to effectively and efficiently report on the cost of a project to the different stakeholder groups • Use figures and tables to provide examples • Show calculat

Describe contract type selected was incorrect, This case study will be disc...

This case study will be discussed and reviewed in the Case Study discussion question for the week. Post your responses to the questions at the end in the Case Study discussion ques

Explain function of operational leadership, Create a scenario that depicts ...

Create a scenario that depicts how the first line leader should act to fulfil the purpose and function of operational leadership in his or her area

Explain goals should not be clearly articulated, Clearly-defined goals are ...

Clearly-defined goals are the essence of great teamwork. Which of the following statements is most true about how goals should be articulated by teams: a. Goals should not be clear

What is prime cost, What is Prime Cost? The sum of Direct Labour Cost, ...

What is Prime Cost? The sum of Direct Labour Cost, Direct Expenses and Direct Material Cost is Prime Cost.

Account receivable of $4, Slighty Used Goods has Cash of $2,150 inventory o...

Slighty Used Goods has Cash of $2,150 inventory of $28,470, fixed assets of $9,860, accounts payable of $11,900, and account receivable of $4,660. What is the cash ratio?

How the organization you researched could become productive, Make one solid...

Make one solid recommendation for how the organization you researched could become more productive by applying one of the lessons learned. Explain your rationale.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd