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

Design a web page for the business function, 1. Design a Web page for the b...

1. Design a Web page for the business function (e.g., ordering, human resources, courier service, inventory listing, etc.). The Web page will have at least the following HTML: a

Explain formal communication chain effective, Most organizations possess so...

Most organizations possess some formal organizational chart showing the established lines of authority and the division of labour. Generally, formal processes of communication are

Describe a competitive market entry strategy, Assignment 5: International M...

Assignment 5: International Marketing Plan Imagine that you are a senior manager for one of the following companies: • Apple • Burger King • Nike • General Mills

Explain exponential smoothing adds a percentage, Exponential smoothing adds...

Exponential smoothing adds a percentage (called) of last period's forecast to estimate next period's demand

Describe potential key changes in communications, Discuss potential key cha...

Discuss potential key changes in technology, communications, and competition that Sigma will face in the future. Which will have the most impact on Sigma%u2019s future marketing st

Explain crises are a regular part of organizational life, How do you think ...

How do you think planning in today's organizations compares to planning 25 years ago? Do you think planning becomes more important or less important in a world where everything is

Explain to what extent did marketing play a role, From an analysis of the c...

From an analysis of the case, discuss some key factors that led to the Williams Company's decline and ultimate exit from the private sector. • To what extent did project managem

Give expectancy theory claims that motivation is a function, Expectancy the...

Expectancy theory claims that motivation is a function of Answer efforts, performance, and rewards. individual traits and supervisory skills. aptitude, training, and op

How to do selection of a database management system, Identify and describe ...

Identify and describe three criteria that should be used to evaluate the selection of a database management system. Describe how an organization should use each criterion to evalua

Medical professional as of all the knowledge i gain, Your friend shows you ...

Your friend shows you some books he took from the bookstore without paying for them. When you question him about it, he says, "Sure I took them. But I'm no different than anybody e

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