Operations Management: Processes and Supply Chains, Student Value Edition Plus MyLab Operations Management with Pearson eText -- Access Card Package (12th Edition)
12th Edition
ISBN: 9780134855424
Author: Lee J. Krajewski, Manoj K. Malhotra, Larry P. Ritzman
Publisher: PEARSON
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Question
Chapter 3, Problem 20P
(a)
Summary Introduction
Interpretation: As there was a concern pertaining to appearance and accuracy of itineraries, in a travel agency, wherein the defects includes errors in reservation numbers, flight numbers, charge card numbers, airlines, timings, accommodation facilities, information regarding car rentals, prices and even typographical errors, it measures the count of errors that occurs, and the process gave findings that for every itinerary, there was an average error of three numbers. The two-sigma control limits for these defects needs to be determined.
Concept Introduction: The graph showing a sample is within the statistical control limits or not is called a Control Chart.
(b)
Summary Introduction
Interpretation: As there was a concern pertaining to appearance and accuracy of itineraries, in a travel agency, wherein the defects includes errors in reservation numbers, flight numbers, charge card numbers, airlines, timings, accommodation facilities, information regarding car rentals, prices and even typographical errors, it measures the count of errors that occurs, and the process gave findings that for every itinerary, there was an average error of three numbers. The information regarding a client who is
Concept Introduction: The graph showing a sample is within the statistical control limits or not is called a Control Chart.
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Representatives of the Patriot Insurance Company take medical information over the telephone from prospective policy applicants prior to a visit to the applicant’s place of residence by a registered nurse who takes vital sign measurements. When the telephone interview has incorrect or incomplete information, the entire process of approving the application is unnecessarily delayed and has the potential of causing loss of business. The following data were collected to see how many applications contain errors. Each sample has 200 randomlyselected applications.
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a. What are the upper and lower control limits of a p-chart for the number of defective applications? Use z = 3.b. Is the process in statistical control?
A six-sigma green belt candidate finds P/T
ratio of his gauge as 0.632. The gauge has
no bias. He tried improving his gauge
precision, but failed to do so. He plans to use
averages of repeated measurements in his
quality improvement project. How many
repeated measurements does he need to
make on a part to have a P/T ratio of 0.200
based on the measurement averages?
Answer:
Boston Electric Generators has been getting many complaints from its major customer, Home Station, about the quality of its shipments of home generators. Daniel Shimshak, the plant manager, is
alarmed that a customer is providing him with the only information the company has on shipment quality. He decides to collect information on defective shipments through a form he has asked his
drivers to complete on arrival at customers' stores. The forms for the first 283 shipments have been turned in. They show the following over the past 8 weeks:
Reason for Defective Shipment
A.
50-
40-
30-
20-
10-
0-
Number of defects
A B C
D
A: Incorrect bill of lading
B: Trucks late
C: Incorrect truckload
D: Damaged product
O B.
Week
1
This exercise contains only part c.
c) Choose the correct Pareto chart for the type of defects that have occurred.
50-
40-
30-
20-
10-
0-
2345∞
6
7
8
No. of
Shipments
23
29
30
37
35
42
元 41 46
Number of defects
A
B C
D
A: Incorrect bill of lading
B: Trucks late
C: Damaged…
Chapter 3 Solutions
Operations Management: Processes and Supply Chains, Student Value Edition Plus MyLab Operations Management with Pearson eText -- Access Card Package (12th Edition)
Ch. 3 - Should a very pricey handcrafted object of beauty...Ch. 3 - Prob. 2DQCh. 3 - Prob. 3DQCh. 3 - Prob. 1PCh. 3 - Prob. 2PCh. 3 - Prob. 3PCh. 3 - Prob. 4PCh. 3 - Prob. 5PCh. 3 - Prob. 6PCh. 3 - Prob. 7P
Ch. 3 - Prob. 8PCh. 3 - Prob. 9PCh. 3 - Prob. 10PCh. 3 - Prob. 11PCh. 3 - Prob. 12PCh. 3 - Prob. 13PCh. 3 - Prob. 14PCh. 3 - Prob. 15PCh. 3 - Prob. 16PCh. 3 - Prob. 17PCh. 3 - Prob. 18PCh. 3 - Prob. 19PCh. 3 - Prob. 20PCh. 3 - Prob. 21PCh. 3 - Prob. 26PCh. 3 - Prob. 27PCh. 3 - Prob. 28PCh. 3 - Prob. 29PCh. 3 - Prob. 31PCh. 3 - Prob. 1AMECh. 3 - Prob. 2AMECh. 3 - Prob. 3AMECh. 3 - Prob. 4AMECh. 3 - Prob. 5AMECh. 3 - Prob. 1VCCh. 3 - Prob. 2VC
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- Boston Electric Generators has been getting many complaints from its major customer, Home Station, about the quality of its shipments of home generators. Daniel Shimshak, the plant manager, is alarmed that a customer is providing him with the only information the company has on shipment quality. He decides to collect information on defective shipments through a form he has asked his drivers to complete on arrival at customers' stores. The forms for the first 285 shipments have been turned in. They show the following over the past 8 weeks: Week 1 234567 8 This exercise contains only part c. No. of Shipments 23 31 30 37 35 42 43 44 No. of Shipments Incorrect with Bill of Defects 10 11 11 12 12 14 15 16 Reason for Defective Shipment Lading 4 1 3 4 5 4 Incorrect Damaged Trucks Truckload Product Late 4 5 5 4 5668 2 7212N 3 AN 4 2 0 4 3111C 2arrow_forwardBoston Electric Generators has been getting many complaints from its major customer, Home Station, about the quality of its shipments of home generators. Daniel Shimshak, the plant manager, is alarmed that a customer is providing him with the only information the company has on shipment quality. He decides to collect information on defective shipments through a form he has asked his drivers to complete on arrival at customers' stores. The forms for the first 287 shipments have been turned in. They show the following over the past 8 weeks: Week No. of Shipments No. of Shipments with Defects 1 23 10 2 31 11 3 32 12 4 39 13 5 35 12 6 40 14 7 41 14 8 46 17 This exercise contains only part a. a) Using the point drawing tool eight times, develop a scatter diagram using total number of shipments and number of defective shipments. Part 2arrow_forwardA travel agency is concerned with the accuracy and appearance of itineraries prepared for its clients. Defects can include errors in times, airlines, flight numbers, prices, car rental information, lodging, charge card numbers, and reservation numbers, as well as typographical errors. As the possible number of errors is nearly infinite, the agency measures the number of errors that do occur. The current process results in an average of five errors per itinerary. a. What are the two-sigma control limits for these defects? The UCLc equals _______________ and the LCLc equals ____________________ (Enter your responses rounded to three decimal places. If your answer for LCLc is negative, enter this value as 0.) b. A client scheduled a trip to Dallas. Her itinerary contained five errors. Interpret this information. A. The number of defects is within the control limits, so it is assumed that the process is not in control. B. The number of defects is within the…arrow_forward
- Boston Electric Generators has been getting many complaints from its major customer, Home Station, about the quality of its shipments of home generators. Daniel Shimshak, the plant manager, is alarmed that a customer is providing him with the only information the company has on shipment quality. He decides to collect information on defective shipments through a form he has asked his drivers to complete on arrival at customers' stores. The forms for the first 288 shipments have been turned in. They show the following over the past 8 weeks: No. of Reason for Defective Shipment Shipments Incorrect No. of Shipments Defects with Bill of Incorrect Damaged Trucks Week Lading Truckload Product Late 1 23 31 32 39 10 4 5 2 4 2 3 4 11 1 4. 1 4 5 12 13 13 14 15 16 5 2 36 5 4 6 7 40 43 44 6 3 6. 1 This exercise contains only part a. a) Choose the correct scatter diagram below using total number of shipments and number of defective shipments. OA. OB. Oc. D. 20- 20- 20- 00 10- 10어 이 0+ 20 26 32 38 44…arrow_forwardIn quality assurance, we use c-charts for quality characteristics that are discrete and involve yes/no or good/bad decisions. True or False. Why?arrow_forwardPareto solution The following table shows the defects identified in the final inspection, during a month, in the soft drink bottles, as well as the number of times these have occurred.arrow_forward
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