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WGU C720 OPERATIONS AND SUPPLY CHAIN MANAGEMENT EXAM A & B ALL 250 QUESTIONS AND VERIFIED DETAILED SOLUTIONS
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WGU C720 OPERATIONS AND SUPPLY CHAIN MANAGEMENT EXAM A & B ALL 250 QUESTIONS AND VERIFIED DETAILED SOLUTIONS

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  • September 5, 2024
  • 86
  • 2024/2025
  • Exam (elaborations)
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Page 1 of 86



WGU C720 OPERATIONS AND SUPPLY CHAIN
MANAGEMENT EXAM A & B ALL 250
QUESTIONS AND VERIFIED DETAILED
SOLUTIONS
WGU C720 EXAM OA EXAM

Why would the company use this check sheet? - ANSWER-To develop a Pareto chart identifying the root
causes of engine defects




Q: Which aspect of quality is demonstrated by a vehicle that has a useful life of 165,000 miles? -
ANSWER-Durability




Q: A quality improvement team is trying to illustrate to upper management how a process is varying
over time as measurements are collected.




Which two statistical process control (SPC) tools should the team use? - ANSWER-Run charts and Control
charts




Q: The CEO of a service company wants to change the strategy of the company from volume sales to
high-quality products.




Which philosophy should the CEO implement to emphasize quality over volume? - ANSWER-Deming's 14
points


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,Page 2 of 86




Q: A company sells garage doors through a national retailer and contracts with local installers to
complete the installations. The operations manager is responsible for completing the installations in a
14-day period after the sale. The company will be penalized financially if it fails to achieve these
objectives. The operations manager's daily responsibilities include contacting installers to expedite
orders and ensure deadlines are met.




Which two tools should be used to measure installer performance?




Choose 2 answers - ANSWER-Control charts to measure the time elapsed to completion Run charts to
chart output around the 14-day central tendency




Q: Which quality tool examines patterns, flow, and causes of variation of data points over time? -
ANSWER-Statistical process control




Q: A vice president of a major retailer is trying to reduce the wait time for customers in the checkout
line by appropriately opening checkout lines. To do this, the VP needs to know the relationship and
degree of correlation between monthly customer visits and area population.




Which tool should be used in this situation? - ANSWER-Scatter plot




Q: Which two company practices reflect the guiding principles of Six Sigma?




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,Page 3 of 86

Choose 2 answers - ANSWER-A company tries to reduce variation in the quality of products it offers.




A company emphasizes the quality of suppliers because the quality of outputs are determined by the
quality of inputs.




Q: Six Sigma is adopted by a manufacturing company.




How can the company use Six Sigma to establish quality improvement? - ANSWER-There should be no
more than 3.4 defects per million products from a manufacturing company statistically.




Q: A company makes rulers that are designed to be 20 cm in length with allowance ±0.1 cm.




If the actual length of a ruler is 20.2 cm, which factor will the company use to judge the quality of the
length of the rulers? - ANSWER-Conformance




Q: Which quality management philosophy uses cause-and-effect fishbone diagrams for root-cause
analysis, emphasizes a bottom-up approach to quality, and considers standardization and quality control
to move together in improvement? - ANSWER-Ishikawa's quality circle




Q: Which quality management philosophy assigns cost to quality, defines quality by how well a product
can be used for its intended purpose, and uses Pareto charts? - ANSWER-Juran Institute's management
theory




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, Page 4 of 86

Q: A clothing retailer sends out evaluations to customers to rate quality as "outstanding," "good,"
"average," and "bad."




If the retailer wants to know the annual frequency of each evaluation category, which tool should the
retailer use? - ANSWER-Histogram




Q: An appliance manufacturer has two factories located around the world, each with its own capacity:

• F1 can make 8 appliances per day.

• F2 can make 10 per day.




The factories can deliver to two different distribution centers. Every day each distribution center must
receive 9 appliances each.




The cost to deliver appliances from each factory to each distribution center is listed in the table below:




Distribution Center 1 Distribution Center 2

F1 $4 $3

F2 $8 $3

Using the factory production constraints and the delivery costs in the above matrix, what is the lowest
cost to deliver all 18 appliances to the distribution centers? - ANSWER-$67




4

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