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 treatment of mental illness in the medical model, Compare the treat...

Compare the treatment of mental illness in the medical model, the public health model, and the human service model. Which model provides the best treatment or approach in your opin

How much dollars of pipeline inventory will be in transit, Prince Electroni...

Prince Electronics, a manufacturer of consumer electronic goods, has five distribution centres in different regions of the country. For one of its products, a high-speed modem pric

Production control, Production Control Meaning and Definition ...

Production Control Meaning and Definition Production control involves implementation of production plans or schedules by coordinating different activities. It seeks to

Define conditions which exist globally that are contributing, Please answer...

Please answer both questions fully to have points awarded, Thanks! Decreasing the Incidence of CVD" Please respond to the following: 1. Propose the steps that might be taken

Define challenges has the european union consortium faces, Describe what ch...

Describe what challenges has the European Union Consortium faced in the last 2-3 years

Resource allocation and Contingency planning, What are those topics all abo...

What are those topics all about? Can you give me a summary of that in a clear and understandable explanation. Thank you so much!

Explain shipping alternative would you recommend, A manager must make a dec...

A manager must make a decision on shipping. There are two shippers, A and B. Both offer a two-day rate: A for $536 and B for $525. In addition, A offers a three-day rate of $464 an

Compute what will be the value, Can you show me step by step how to solve t...

Can you show me step by step how to solve the following problem? Payments of $20,000 at 6% interest Compounding quarterly What will be the value in 12 years?

What are policy and operative decisions, What are policy and operative deci...

What are policy and operative decisions? Policy decisions are very significant, they are taken by top management, and they have a long-term impact and mostly relate to fundamen

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