Homework Help is Here – Start Your Trial Now!
Business
Operations Management
1. A quality analyst wants to construct a sample mean and range charts for controlling a packaging process. He knows from past experience that when the process is op- erating as intended, packaging weight is normally distributed with a mean of twenty ounces, and a process standard devia- tion of two ounces. Each day last week, he randomly selected 2. Pairs of Yeezy sneakers are supposed to weigh exactly four packages and weighed each. The data he collected ap- pear below in ounces. (b) With a value of z that would provide 99.73% confidence, construct an Xbar and R charts for this process. what do you conclude about the process – is it in control? Answer: Ikg. Inspectors want to develop process control charts. They take ten samples of six pairs each and weigh them. Based on the following data (in kg), compute the lower and upper control limits and determine whether the process is in control. Note that the overall standard deviation of the population is un- known. Day Package 1 Package 2 Package 3 Package 4 Moaday 23 22 23 24 Tuesday 23 21 19 21 Wedaesday 20 19 20 21 Thursday 18 19 20 19 Friday 18 20 22 20 Sample Mean Range 120 (a) If he sets an upper control limit of 21 and a lower control limit of 19 around the target value of 20 ounces, the control chart is based on what value of z? 90 80 1.10 1.00 130 10 Answer: 95 1.20 10 1.45

1. A quality analyst wants to construct a sample mean and range charts for controlling a packaging process. He knows from past experience that when the process is op- erating as intended, packaging weight is normally distributed with a mean of twenty ounces, and a process standard devia- tion of two ounces. Each day last week, he randomly selected 2. Pairs of Yeezy sneakers are supposed to weigh exactly four packages and weighed each. The data he collected ap- pear below in ounces. (b) With a value of z that would provide 99.73% confidence, construct an Xbar and R charts for this process. what do you conclude about the process – is it in control? Answer: Ikg. Inspectors want to develop process control charts. They take ten samples of six pairs each and weigh them. Based on the following data (in kg), compute the lower and upper control limits and determine whether the process is in control. Note that the overall standard deviation of the population is un- known. Day Package 1 Package 2 Package 3 Package 4 Moaday 23 22 23 24 Tuesday 23 21 19 21 Wedaesday 20 19 20 21 Thursday 18 19 20 19 Friday 18 20 22 20 Sample Mean Range 120 (a) If he sets an upper control limit of 21 and a lower control limit of 19 around the target value of 20 ounces, the control chart is based on what value of z? 90 80 1.10 1.00 130 10 Answer: 95 1.20 10 1.45

Practical Management Science
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...
See similar textbooks
icon
Related questions
Question

please help answer part a and b for question 1. Please answer question 2 as well.

1. A quality analyst wants to construct a sample mean and range charts for controlling a packaging process. He knows from past experience that when the process is op- erating as intended, packaging weight is normally distributed with a mean of twenty ounces, and a process standard devia- tion of two ounces. Each day last week, he randomly selected 2. Pairs of Yeezy sneakers are supposed to weigh exactly four packages and weighed each. The data he collected ap- pear below in ounces. (b) With a value of z that would provide 99.73% confidence, construct an Xbar and R charts for this process. what do you conclude about the process – is it in control? Answer: Ikg. Inspectors want to develop process control charts. They take ten samples of six pairs each and weigh them. Based on the following data (in kg), compute the lower and upper control limits and determine whether the process is in control. Note that the overall standard deviation of the population is un- known. Day Package 1 Package 2 Package 3 Package 4 Moaday 23 22 23 24 Tuesday 23 21 19 21 Wedaesday 20 19 20 21 Thursday 18 19 20 19 Friday 18 20 22 20 Sample Mean Range 120 (a) If he sets an upper control limit of 21 and a lower control limit of 19 around the target value of 20 ounces, the control chart is based on what value of z? 90 80 1.10 1.00 130 10 Answer: 95 1.20 10 1.45
Transcribed Image Text:1. A quality analyst wants to construct a sample mean and range charts for controlling a packaging process. He knows from past experience that when the process is op- erating as intended, packaging weight is normally distributed with a mean of twenty ounces, and a process standard devia- tion of two ounces. Each day last week, he randomly selected 2. Pairs of Yeezy sneakers are supposed to weigh exactly four packages and weighed each. The data he collected ap- pear below in ounces. (b) With a value of z that would provide 99.73% confidence, construct an Xbar and R charts for this process. what do you conclude about the process – is it in control? Answer: Ikg. Inspectors want to develop process control charts. They take ten samples of six pairs each and weigh them. Based on the following data (in kg), compute the lower and upper control limits and determine whether the process is in control. Note that the overall standard deviation of the population is un- known. Day Package 1 Package 2 Package 3 Package 4 Moaday 23 22 23 24 Tuesday 23 21 19 21 Wedaesday 20 19 20 21 Thursday 18 19 20 19 Friday 18 20 22 20 Sample Mean Range 120 (a) If he sets an upper control limit of 21 and a lower control limit of 19 around the target value of 20 ounces, the control chart is based on what value of z? 90 80 1.10 1.00 130 10 Answer: 95 1.20 10 1.45
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 5 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Customer experience
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, operations-management and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Practical Management Science
Practical Management Science
Operations Management
ISBN:
9781337406659
Author:
WINSTON, Wayne L.
Publisher:
Cengage,
Operations Management
Operations Management
Operations Management
ISBN:
9781259667473
Author:
William J Stevenson
Publisher:
McGraw-Hill Education
Operations and Supply Chain Management (Mcgraw-hi…
Operations and Supply Chain Management (Mcgraw-hi…
Operations Management
ISBN:
9781259666100
Author:
F. Robert Jacobs, Richard B Chase
Publisher:
McGraw-Hill Education
Business in Action
Business in Action
Operations Management
ISBN:
9780135198100
Author:
BOVEE
Publisher:
PEARSON CO
Purchasing and Supply Chain Management
Purchasing and Supply Chain Management
Operations Management
ISBN:
9781285869681
Author:
Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. Patterson
Publisher:
Cengage Learning
Production and Operations Analysis, Seventh Editi…
Production and Operations Analysis, Seventh Editi…
Operations Management
ISBN:
9781478623069
Author:
Steven Nahmias, Tava Lennon Olsen
Publisher:
Waveland Press, Inc.
SEE MORE TEXTBOOKS