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QSO600 module 3 problems

Question # 00012616
Subject: Statistics
Due on: 04/30/2014
Posted On: 04/17/2014 08:28 PM

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23. Last year, the manager of the service department at East Woods Ford instituted a customer opinion program to find out how to improve service.

One week after service on a vehicle was performed; an assistant would call the customer to find out whether the work had been done satisfactorily and how service could be improved. After a year of gathering data, the assistant discovered that the complaints could be grouped into the following five categories:

Complaint

Frequency

Unfriendly atmosphere

5

Long wait for service

17

Price too high

20

Incorrect bill

8

Needed to return to correct problem

50

Total

100

a. Draw a bar chart and a Pareto chart to identify the significant service problems

b) Categorize the following causes of complaints into a cause-and-effect diagram: tools, scheduling, defective parts, training, billing system, performance measures, diagnostic equipment, and communications.

24. Oregon Fiber Board makes roof liners for the automotive industry. The manufacturing manager is concerned about product quality. She suspects that one particular failure, tears in the fabric, is related to production-run size. An assistant gathers the following data from production records: Run Size Failures (%) Run Size Failures (%) 1 1,000 3.5 11 6,500 1.5 2 4,100 3.8 12 1,000 5.5 3 2,000 5.5 13 7,000 1.0 4 6,000 1.9 14 3,000 4.5 5 6,800 2.0 15 2,200 4.2 6 3,000 3.2 16 1,800 6.0 7 2,000 3.8 17 5,400 2.0 8 1,200 4.2 18 5,800 2.0 9 5,000 3.8 19 1,000 6.2 10 3,800 3.0 20 1,500 7.0

a. Draw a scatter diagram for these data.

b. Does there appear to be a relationship between run size and percent failures? What implications does this data have for Oregon Fiber Board’s business?

Tags problems module qso600 service data size following failures 0 diagram complaints oregon 1 fiber draw year aistant 2 manager does customer quality product concerned manufacturing suspects particular percent tears failure implications industry

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QSO600 module 3 problems

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Posted On: 04/17/2014 08:32 PM
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