# Qso 3 5 Homework Chapter 2 Essay

624 words - 3 pages

3-5 Homework: Chapter 2
Jennifer Liu
QSO-60Q5619-Operations Management
Southern New Hampshire University
Professor Dr. Zivick
August 2, 2015

Question: 2-52

CAUSE AND EFFECT DIAGRAM

Operator Mechanical Electrical

Car will not start
Car will not start

Fuel System Environment

Question: 2-52

When developing a fishbone diagram for the possible causes of your car not starting, it is important to list all ideas of possible cause. One all the possible causes have been listed you can start to eliminate non-causes of the problem. For example, on my list one possible cause is lost key. However, if we have the key to the car then we can eliminate lost key from our diagram knowing that is no longer a likely cause of reason for the car not starting. When ...view middle of the document...

McNeese, n.d.).

Problem: 2.52
The Omega Shoe Company manufactures a number of different styles of athletic shoes. Its biggest seller is the X-Pacer running shoe. In 2008 Omega implemented a quality-management program. The company's shoe production for the past three years and manufacturing costs are as follows.

Year
2008 2009 2010
Units produced/input    32,000  34,600 35,500
Manufacturing cost \$278,000  291,000  305,000
Percent good quality       78%   83%      90%

Manufacturing cost per good product:
2008:
Yield = 32,000(0.78) + 32,000(0.22) (0.25)
= 24,960 + 1,760 = 26,720
Product cost per unit = (278,000 + 3520) ÷ 26,720 = \$10.54

2009:
Yield = 34,600(0.83) + 34,600(0.17) (0.25)
= 28,718 + 1,470.50 = 30,188.50
Product cost per unit = (291,000 + 2,941) ÷ 30,188.50 = \$9.74

2010:
Yield = 35,500(0.9) + 35,500(0.1) (0.25)
= 31,950 + 887.50 = 32,837.50
Product cost per unit = (305,000 + 1,775) ÷ 32,837.50 = \$9.34

Percentage Change:
2008 – 2009: (10.54-9.74)/10.54*100 = 7.6% decrease
2009 – 2010: (9.74-9.34)/9.74*100 = 4.1% decrease
Overall decrease (10.54-9.34)/10.54*100 = 11.38%

Problem 2-6
The Colonial House Furniture Company:
Stage Average Percentage Good Quality
1 87%
2 91%
3 94%
4 93%
5 93%
6 96%

a. The weekly product yield for good quality cabinets = product input *0.87*0.91*0.94*.093*0.93*0.96 = 300*0.618 = 185.4
b. In order to achieve a final weekly product yield of 300 cabinets, the weekly product input + 300/(0.87*0.91*0.94*0.93*0.93*0.96) = 300/0.618 = 485.4

References:

Dr. McNeese, Bill (n.d.) Analyzing Cause and Effect Diagrams

Russell, R., & Taylor, B. (2014) The effect of Quality Management on Productivity. Operations and Supply Chain Management (8th ed. ed) Hoboken, NJ: John Wiley & Sons (chapter 2)

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