New Semester
Started
Get
50% OFF
Study Help!
--h --m --s
Claim Now
Question Answers
Textbooks
Find textbooks, questions and answers
Oops, something went wrong!
Change your search query and then try again
S
Books
FREE
Study Help
Expert Questions
Accounting
General Management
Mathematics
Finance
Organizational Behaviour
Law
Physics
Operating System
Management Leadership
Sociology
Programming
Marketing
Database
Computer Network
Economics
Textbooks Solutions
Accounting
Managerial Accounting
Management Leadership
Cost Accounting
Statistics
Business Law
Corporate Finance
Finance
Economics
Auditing
Tutors
Online Tutors
Find a Tutor
Hire a Tutor
Become a Tutor
AI Tutor
AI Study Planner
NEW
Sell Books
Search
Search
Sign In
Register
study help
business
marketing research
An Introduction To Six Sigma And Process Improvement 2nd Edition James R. Evans, William M. Lindsay - Solutions
Discuss (with examples) how DFMEA might be used in a service application rather than in a pure product design application.
Most children (and many adults) like to assemble and fly balsa-wood gliders. From your own experiences or from interviews with other students, define a set of customer requirements for a good glider. Even better, buy one and test it to determine these requirements yourself. If you were to design
Suppose that you were developing a small pizza restaurant with a dining area and local delivery. Develop a list of customer requirements and technical requirements and try to complete a House of Quality. What service standards might such an operation have?
Explain the difference between nominal dimensions and tolerances. How should tolerances be realistically set?
Explain the Taguchi loss function and how it is used in process and tolerance design.
How do Taguchi methods differ from traditional design of experiments (DOE)?
How can product design affect manufacturability? Explain the concept and importance of design for manufacturability.
What is design failure mode and effects analysis (DFMEA)? Provide a simple example illustrating the concept.
What is the importance of reliability and why has it become such a prominent area within the quality disciplines?
Explain the product life characteristics curve and how it can be used.
Define reliability. Explain the definition thoroughly.
What is the difference between a functional failure and a reliability failure?
What is the definition of failure rate? How is it measured?
What is the signal-to-noise ratio and how is it used in design optimization?
What is a reliability function? Discuss different ways of expressing this function.
Explain how to compute the reliability of series, parallel, and series-parallel systems.
The data (Prob04-06 in Ch04Data.xlsx on the Student Companion Site) represent the weight of castings (in kilograms) being made in the Harrison Metalwork foundry. Based on this sample of 100 castings, compute the mean, standard deviation, and other relevant statistics, as well as a frequency
You are asked by the owner of the Moonbow Motel to develop a customer satisfaction survey to determine the percentage of customers who are dissatisfied with service. In the past year, 10,000 customers were serviced. The owner desires a 95 percent level of confidence with an allowable statistical
Interview black belts or project champions in an organization that has adopted a Six Sigma approach. Discuss their requirements for data and find out how easy or difficult it is to gather the data needed to support their teams and recommendations to management.
Auditors at the Numeros Verdes Partners, P.S.C., took a sample of 200 accounts payable bills, as shown in the table found in the worksheet Prob04-03 in the Excel workbook Ch04Data.xlsx on the Student Companion Site. Find the proportion of the accounts payable in the sample that are classified as
What does the acronym SMART stand for, and how can these characteristics be used to develop good process measures and indicators?
How can measurement be used to control and improve the daily operations of your college or university?
Conduct an R&R study with a team of your fellow students to measure a set of sharpened pencils of various sizes. Use both an ordinary ruler and a metric ruler. What conclusions do you reach?
Outline the steps needed to systematically generate useful process performance measures.
How does the adoption of a Six Sigma approach within an organization change the amount and types of data that may be gathered routinely, as well as for specific projects?
Visit several of the following metrology websites (and identify some others) and summarize new ideas, concepts, or findings that are not discussed in this chapter.a. www.kinematics.comb. www.sandia.govc. www.asq.org/measured. www.nist.gov/index.htmle.
The quality manager at the Noscrap Shirt Company took a random sample of 10 workers’ output of good and defective shirts produced for 10 days each on a check sheet, as shown in the worksheet Prob04-04 in the Excel workbook Ch04Data.xlsx on the Student Companion Site. Find the proportion of
Visit a local machine shop, bakery, or similar factory to determine what type of measurements they perform, what instruments they use, how they use the data, and how they ensure the precision and accuracy of their instruments and gauges. Write a report of your findings.
What is a process map (or flowchart), and what benefits do these maps provide to project team members and decision-makers?
Two scales at Aussieburgers, Ltd., were used to weigh the same 25 samples of hamburger patties for a fast-food restaurant in Australia. Results are shown in Ch04Data.xlsx file for Prob04-07 on the Student Companion Site for this chapter. The samples were weighed in grams, and the supplier has
A gauge repeatability and reproducibility study at NEW Gauge, Inc., collected the data for three operators, two trials, and eight parts, as found in the worksheet Prob04-08 in the Excel file Ch04Data.xlsx on the Student Companion Site for this chapter. Analyze these data. The part specification is
Describe the different approaches to sample selection and provide an example in which each would be most appropriate.
What are the sources of systematic error in sampling, and how can systematic error be overcome?
Explain the differences between the techniques for determining sample sizes for discrete versus continuous variables (population measures).
For the data from Speciatronics, Ltd. (Prob04-09 in Ch04Data.xlsx on the Student Companion Site), the upper specification limit was USL = 5.25, and the lower specification limit was LSL = 1.75. Compute the process capability and discuss its meaning in managerial terms.Process Capability
A machining process has a required dimension on a part of 0.515 ± 0.007 inches. Twenty-five parts were measured as found in the Ch04Data.xlsx file for Prob04-10 on the Student Companion Site. What is its capability for producing within acceptable limits?Machining Process I - Process Capability
Adjustments were made in the process discussed in Problem 10, and 25 more samples were taken. The results are given in the Ch04Data.xlsx file for Prob04-11 on the Student Companion Site. What can you observe about the process? What is its capability for producing within acceptable limits
Explain why processes that rely on visual interpretation of product characteristics or manual reading of gauges and instruments may encounter error rates from 10 to 50 percent. What can be done to reduce these probabilities?
What are the basic questions organizations must ask in order to collect accurate data?
Identify some of the major processes a student encounters in a college or university. What types of noneducational institutions perform similar processes and might be candidates for benchmarking?
Datacrackers, Inc., generated preliminary data from a client’s process as found in Prob04-05 in spreadsheet Ch04Data.xlsx on the Student Companion Site.a. Apply the Excel Descriptive Statistics tool to compute the mean, standard deviation, and other relevant statistics, and interpret the results
Describe different types of check sheets that are useful in quality improvement.
Discuss the following questions related to the Casper Merrill Six Sigma in Practice vignette:a. What role did analysis of the variation in the ice cream freezers and the extrusion process play in their application of lean Six Sigma methods to their operations?b. How did Casper’s analysis of their
Discuss the basic questions that must be addressed in a sampling study.
State the four rules for calculating probabilities of events.
The standard deviation of the weight of filled salt containers is 0.4 ounce. If 2.5 percent of the containers contain less than 16 ounces, what is the mean filling weight of the containers?Salt ContainersX-value Calculations Given Probabilities Using the Inverse Normal Distribution - TemplateThis
List the most important types of probability distributions used in quality management.
Kiwi Oil is sold in 950-milliliter (ml) cans. The mean volume of oil placed in a can is 920 ml with a standard deviation of 12 ml. Assuming a normal distribution, what is the probability that the filling machine will cause an overflow of a can, that is, the probability that more than 950 ml will be
Explain the multiplication rule of probability. How does independence of events affect the multiplication rule?
From the data for Prob04-12 for Kermit Theatrical Products on the Student Companion Site, calculate summary statistics and construct a histogram. If the specifications are 24 ± 0.03, compute Cp, Cpu, Cpl, and Cpk.Kermit Theatrical ProductionsColumn124.02924.003Mean24.001424.020Standard
Describe the science of metrology.
Suppose that a process at Manuel Automation with a normally distributed output has a mean of 50.0 cm and a variance of 3.61 cm.a. If the specifications are 51.0 ± 3.75 cm, compute Cp, Cpu, Cpl, and Cpk.b. Suppose the mean shifts to 52.0, but the variance remains unchanged. Recompute and
What is calibration and why is it important to a good quality assurance system?
Explain the term process capability. How can process capability generally be improved?
Define the process capability indexes, Cp, Cpl, and Cpu, and explain how they may be used to establish or improve quality policies in operating areas or with suppliers.
Devise an experiment similar to the Megalife battery example to test different levels of some factor and conduct a statistical analysis using ANOVA on the results. Write up your experiment and results in a report along with the conclusions that you reach from the analysis. You might wish to consult
Why are statistical inference and predictive statistical methods important to Six Sigma?
In the GE-Fanuc case, why did the experimental design have to be so complex? Why were so many individuals involved in this project?
The Turkuman Rug Company buys medium grade carpet in 100-foot rolls. The average number of defects per roll is 1.8. Assuming that these data follow a Poisson distribution, use the Poisson spreadsheet template to answer the following questions.a) What is the probability of finding exactly seven
Explain the difference between an experiment, an outcome, and a sample space.
What might have been some contributing factors that caused GE-Fanuc to select the Ni-Au over the cheaper boards in the past?
State the meaning of the central limit theorem in your own words. How important is it to the development and use of statistical quality control techniques?
The dimension of a machined part made by Machinheimer Machinery has a nominal specification of 11.9 cm. The process that produces the part can be controlled to have a mean value equal to this specification, but has a standard deviation of 0.05 cm. What is the probability that a part will have a
Explain the difference between population parameters, such as μ and σ and sample statistics, such as x̄ and s.
How do discrete probability distributions differ from continuous probability distributions?
Wayback Cleaning Co. has found that standard size offices have a standard deviation of 5 minutes for their cleaning time. The operations manager knows that 95 percent of the offices require more than 120 person-minutes to clean. However, she wishes to find out the average cleaning time for the
What are some of the statistical tools related to probability distributions available in Microsoft Excel, and how can they be used?
The Monterey Fiesta Mexican Restaurant is trying to determine if its popular Pan Con Mucho Sabor breadsticks are correlated with the sales of margaritas. It has data on sales of breadstick baskets and margaritas for 25 weeks, shown in the Ch05Data.xlsx file for Prob05-17 on the Student Companion
A Teclear, Inc. call center requires service operators to answer telephone calls from customers in an average time of 0.15 minute or less. A sample of 36 actual operator times was drawn, and the results are given in the following table. In addition, operators are expected to determine customer
Softswift, a software developer, is trying to determine if any of three potential subcontractors has better programmers in order to outsource a development project. The three subcontractors agreed to test five programmers, using a standardized test provided by Softswift, as provided in the data in
A quality analyst at Paintfast Manufacturing Co. wants to determine if a new paint formulation, used to paint parts for a customer’s assembly operation will dry fast enough to meet the customer’s needs. The customer would prefer to obtain a high level of “dryability” at low temperatures,
The quality manager at Newvis Pharmaceutical Company is certifying a new process that must produce 90 percent (or better) good product before certification can be completed. A sample of 49 containers from the process line is tested, and 87 percent are found to be good. Formulate the appropriate
Explain the differences between correlation and regression. How are they related?
A process engineer at Sival Electronics was trying to determine whether three suppliers would be equally capable of supplying the mounting boards for the new “gold plated” components that she was testing. The Ch05Data. xlsx file for Prob05-16 on the Student Companion Site shows the coded defect
What is a confidence interval? What value do they have?
Define a hypothesis test, and list the steps that are required to conduct one.
River Bottom Fire Department is evaluating their response times in order to determine whether a new fire station is needed. Samples were taken for 30 random days from 6 stations. These data can be found in the worksheet Prob07-01 in the Ch07Data.xlsx file.a. Using Microsoft Excel® or similar
What is the statistical basis for ANOVA; that is, what hypothesis is it designed to test?
A flowchart for a fast-food drive-through window is shown in Figure 6.2. Determine the important quality characteristics inherent in this process and suggest possible improvements using the Deming cycle. FIGURE 6.2 FLOWCHART FOR PROBLEM 1 Customers pull up to sign and decide what they want to
What is a root cause? How does the “Five Why” technique help uncover the root cause?
Describe a factorial experiment. Provide some examples of factorial experiments that you might use to solve some types of quality-related problem.
What is the purpose of design of experiments?
Describe the structure of a cause-and-effect diagram.
The current process for fulfilling a room service request at the Luxmark hotel can be described as follows: After the tray is prepared at the room service station, the server proceeds to the room, knocks on the door, sets up the meal, has the customer sign the check, asks if anything else is
Placewrite, Inc., an independent outplacement service, helps unemployed executives find jobs. One of the major activities of the service is preparing resumes. Three word processors work at the service typing resumes and cover letters. Together they handle about 120 individual clients. Turnaround
What is flexibility and why is it important to a modern organization?
Design a process for the following activities:a. Preparing for an examb. Writing a term paperc. Planning a vacationd. Making breakfast for your familye. Washing your carDraw a flowchart for each process and discuss how ways in which both quality and cycle time might be improved.
Work with your school administrators to identify an important qualityrelated problem they face. Outline a plan for improvement. If time permits, apply some of the problem-solving tools to collect data, identify the root cause, and generate ideas for solving the problem or improving the situation.
Maintaining accuracy of books on the shelves in a college library is an important task. Consider the following problems that are often observed.a. Books are not placed in the correct shelf position. This process includes those books that have been checked out and returned, as well as those taken
What is reengineering? How does it relate to Six Sigma practices?
Describe a personal problem you face and how you might use the Deming cycle and QC tools to address it.
What is a stretch goal? How can stretch goals help an organization?
What are the key impacts of cycle time reduction?
In the Six Sigma in Practice case, what results were attained in specific areas of targeted improvements?
What is the Deming cycle? Explain the four steps.
Work with teachers at a local high school or elementary school to identify some students who are having difficulties. Apply quality tools to help find the source of the problems and create an improvement plan.
What are the fundamental questions that should be asked when analyzing a process using a process map?
Search the Internet for John Grout’s poka-yoke website. Read several of the interesting articles available there and write a report on the information you discovered.
Interview a plant manager or quality professional at one or more local companies to see if they have used any poka-yoke approaches to mistake-proof their operations.
Why do people make inadvertent mistakes? How does poka-yoke help prevent such mistakes?
Showing 6400 - 6500
of 6635
First
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
Step by Step Answers
Get 50% OFF
Claim Now
