Develop a fishbone diagram for the possible causes of your car not starting.
Problem 1: 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%
|
Only one-quarter of the defective shoes can be reworked, at a cost of $2 apiece. Compute the manufacturing cost per good product for each of the three years and indicate the annual percentage increase or decrease resulting from the quality-management program.
Problem 2. The Colonial House Furniture Company manufactures four-drawer oak filing cabinets in six stages. In the first stage, the boards forming the walls of the cabinet are cut; in the second stage, the front drawer panels are woodworked; in the third stage, the boards are sanded and finished; in the fourth stage, the boards are cleaned, stained, and painted with a clear finish; in the fifth stage, the hardware for pulls, runners, and fittings is installed; and in the final stage, the cabinets are assembled. Inspection occurs at each stage of the process, and the average percentages of good-quality units are as follows.
|
Stage
|
Average Percentage Good Quality
|
|
1
|
87%
|
|
2
|
91%
|
|
3
|
94%
|
|
4
|
93%
|
|
5
|
93%
|
|
6
|
96%
|
The cabinets are produced in weekly production runs with a product input for 300 units.
a. Determine the weekly product yield of good-quality cabinets.
b. What would weekly product input have to be in order to achieve a final weekly product yield of 300 cabinets?