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

Expensive car you can afford if you finance it for months, You have saved $...

You have saved $5000 for a down payment on a new car. The largest monthly payment you can afford is $350. The loan would have a 10% APR based on the end of month payments. What is

Explain cost benefit analysis, Explain cost benefit analysis. Cost Ben...

Explain cost benefit analysis. Cost Benefit Analysis: This analysis is a mathematical technique for decision-making. This is a quantitative technique used to estimate the eco

Explain what factors make up strategic process, Discuss the following quest...

Discuss the following questions in relation to strategic management: • What factors make up this process? • How important is it to change, and what criteria determine the cha

Simulation, Which of the following distributions cannot be simulated a) U...

Which of the following distributions cannot be simulated a) Uniform b) Poisson. c) Normal. d) All of these can be simulated.

Explain common challenges of managing projects, Discuss common challenges o...

Discuss common challenges of managing projects and the value of effective management to an organization

Impact on the practice of leadership, Question: The fundamentals of Lea...

Question: The fundamentals of Leadership practice are still very much the same as 10 years back but the context has dramatically changed! i. Enumerate the factors in this n

Major help Needed STAT, Doc On Call (Q12 – Q14) A company has started a ph...

Doc On Call (Q12 – Q14) A company has started a phone service that uses overseas doctors to provide emergency medical consultations. The responding doctors are based in a country

Legal rules for recovery of the amounts, MJZ Corporation had a checking acc...

MJZ Corporation had a checking account with Gulfstream Bank. So that customers who close their accounts would not be embarrassed by having their checks bounce, the bank routinely h

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