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Exam 11: Six Sigma And Process Improvement

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Question 1

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Specifications for the density of dustless chalk used in classrooms is 3.5 ± 1.5. (The unit of measure is grams per centimeter²,or g/cm².)A random sample of 100 pieces of chalk was selected and the density of each piece in the sample was recorded.The sample average was equal to 3.6 and the sample standard deviation was equal to 0.75.A histogram of the sample data is given below. a.How many pieces of chalk in the sample are considered defective (not within the specifications)? b.Using your response to the above question,what is the dpmo value for this process? c.According to the concepts of Six-Sigma Quality,what the quality level for this process? (Use the appropriate table provided in the textbook.)

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a. Seven,two below the lower specificati...

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Question 2

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A bank's savings account statements contain 24 items of account information.Last month,2500 bank statements were checked and 52 errors were found in the account items.What is the dpmo value?

A) 0.021
B) 867
C) 0.46
D) 1154

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Question 3

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_____ are special types of data collection forms in which the results may be interpreted on the form directly without additional processing.

Bottom-up projects generally are tied to business strategy and are aligned with customer needs.

Factors that should be considered when selecting Six Sigma projects include the following EXCEPT:

Some people assert that Six Sigma quality levels represent overkill in most industry situations.Counter this assertion with industry examples where less than six sigma quality would significantly impact industry performance and perhaps social welfare at large.

_____ provide clues about the characteristics of the parent population from which a sample is taken.

The process of drilling down to a more specific problem statement is sometimes called "project scoping."

Which of the following is NOT a tool used in lean production?

_____ is used to interpret scatter diagrams.

Which phase is the idea-gathering phase of DMAIC?

Identifying CTQs can be an important step in evaluating and prioritizing potential Six Sigma projects."CTQ" denotes:

"Low hanging fruit" refers to apparent quality problems that have existed for some time and past attempts to correct them have failed.

A change in the quality level from 3-sigma to 4-sigma represents a five-fold improvement.

_____ refers to rapid changeover of tooling and fixtures in machine shops so that multiple products in smaller batches can be run on the same equipment.

Some have argued the Six Sigma programs are merely repackaged versions of older quality improvement programs that originally accompanied TQM initiatives in the 1980s.Present arguments that both support and refute this view.

The focus on optimizing CTQs for Six Sigma product and system performance by balancing cost,schedule,and quality is known as Design for Six Sigma.

The _____ phase requires an understanding of the causal relationships between process performance and customer value.

The "5 Why" technique is useful in identifying:

Analysis of customer complaints at Flash Apparel Company revealed errors in five categories.Data is provided below.Construct a Pareto diagram for these data.What conclusions can you reach?