Question 1

When should complete inspection be used?

Accepted Answer

A)  when inspection tests are destructive 
B)  when inspection tasks are monotonous 
C)  when the cost of product failure is high relative to the inspection costs 
D)  when quality is a competitive priority 
A)  when inspection tests are destructive 
B)  when inspection tasks are monotonous 
C)  when the cost of product failure is high relative to the inspection costs 
D)  when quality is a competitive priority

Question 2

The investment a company makes in training employees to perform their duties and redesigning products and processes to improve them would be categorized as prevention costs.

Accepted Answer

A) True 
 B)False

Question 3

One chart commonly used for quality measures based on product or service attributes is the $ \bar{x} $ chart.

Accepted Answer

A) True 
 B)False

Question 4

Small groups of employees and supervisors that meet to identify, analyze, and solve process and quality problems are known as ________.

Accepted Answer

The answer of Small groups of employees and supervisors that...

Question 5

Quality measured with reference to price is captured by the notion of:

Accepted Answer

A)  conformance to specifications. 
B)  value. 
C)  fitness for use. 
D)  psychological impressions. 
A)  conformance to specifications. 
B)  value. 
C)  fitness for use. 
D)  psychological impressions.

Question 6

Samples of size 4 were taken from a process that had a target of 25 ounces with upper and lower specification limits of 30 ounces and 20 ounces respectively. Create the appropriate control charts and determine whether the process is in control.

Accepted Answer

This is variables data, so x-bar and R c

Question 7

Applying Six Sigma to service processes is more challenging than for manufacturing processes.

Accepted Answer

A) True 
 B)False

Question 8

Table 5.11
Factors for Calculating Three-Sigma Limits for the $ \bar{x} $ 
 Chart and R-Chart
   
Source: 1950 ASTM Manual on Quality Control of Materials, copyright American Society for Testing Materials. Reprinted with permission.
-Thermostats are subjected to rigorous testing before they are shipped to air conditioning technicians around the world. Results from the last five samples are shown in the table. Calculate control limits for a chart that will monitor performance to target. The correct control limits as (LCL,UCL) are:

Accepted Answer

A)  (70.46, 73.39). 
B)  (68.94,74.89). 
C)  (69.71,74.14). 
D)  (69.80,74.05). 
A)  (70.46, 73.39). 
B)  (68.94,74.89). 
C)  (69.71,74.14). 
D)  (69.80,74.05).

Question 9

A process with a target of 25 was used to generate the following data points. Is the process properly centered?

Accepted Answer

The sample means and ranges ar

Question 10

Using a value of 0.729 for the A₂ lookup from Table 5.1 yields:
UCL = 24.6 + 0.729*5.73 = 28.8
LCL = 24.6 - .729*5.73 = 20.4
   
The chart is in control.
-A professor records the number of students who complain each week throughout the semester. If the class size is forty students, what are 3-sigma control limits for this class? Construct a control chart and interpret the data.

Accepted Answer

The answer of Using a value of 0.729 for the...

Question 11

The defect rate for a product has historically been about 2.0%. What are the upper and lower control chart limits if you wish to use a sample size of 100 and 3-sigma limits?

Accepted Answer

The answer of The defect rate for a product has...

Question 12

Table 5.11
Factors for Calculating Three-Sigma Limits for the $ \bar{x} $ 
 Chart and R-Chart
   
Source: 1950 ASTM Manual on Quality Control of Materials, copyright American Society for Testing Materials. Reprinted with permission.
-Thermostats are subjected to rigorous testing before they are shipped to air conditioning technicians around the world. Results from the last five samples are shown in the table. Calculate control limits for a chart that will monitor process consistency. The correct control limits as (LCL,UCL) are:

Accepted Answer

A)  (-5.37,5.37). 
B)  (0.00,5.37). 
C)  (0.00,6.03). 
D)  (0.00,6.12). 
A)  (-5.37,5.37). 
B)  (0.00,5.37). 
C)  (0.00,6.03). 
D)  (0.00,6.12).

Question 13

Because Six Sigma involves the elimination of defects, it can only be applied in manufacturing processes.

Accepted Answer

A) True 
 B)False

Question 14

Quality at the source refers to the effort to catch and correct any mistakes as they are being made by those that are making them.

Accepted Answer

A) True 
 B)False

Question 15

Table 5.11
Factors for Calculating Three-Sigma Limits for the $ \bar{x} $ 
 Chart and R-Chart
   
Source: 1950 ASTM Manual on Quality Control of Materials, copyright American Society for Testing Materials. Reprinted with permission.
-Construct 3-sigma X-bar and R-charts using the data in the table. What conclusions can you draw about the state of control for this process?

Accepted Answer

A)  X-bar chart is out of control but the R-chart is in control 
B)  the X-bar chart is out of control and the R-chart is also out of control 
C)  the X-bar chart and the R-chart are both in control 
D)  the X-bar chart is in control but the R-chart is out of control 
A)  X-bar chart is out of control but the R-chart is in control 
B)  the X-bar chart is out of control and the R-chart is also out of control 
C)  the X-bar chart and the R-chart are both in control 
D)  the X-bar chart is in control but the R-chart is out of control

Question 16

With respect to the systems approach of TQM, failure to manage the ________ is where most companies fall short in achieving quality objectives.

Accepted Answer

The answer of With respect to the systems approach of...

Question 17

A bank randomly looks at loan applications and checks them for errors. Ten applications and the number of errors identified on the applications are found in the following table. When the process is working correctly, the average number of errors found is 2. Construct a c-chart to determine if the process is in control.

Accepted Answer

\[
\begin{aligned}
\mathrm{UCL}_{c} &=\b

Question 18

What is the long-term impact of unethical business practices on product and service quality?

Accepted Answer

Firms that produce better quality servic

Question 19

The upper and lower control limits for a component are 0.150 cm. and 0.120 cm., with a process target of .135 cm. The process standard deviation is 0.004 cm. and the process average is 0.138 cm. What is the process capability index?

Accepted Answer

A)  1.00 
B)  1.25 
C)  1.50 
D)  1.75 
A)  1.00 
B)  1.25 
C)  1.50 
D)  1.75

Question 20

Process centering is shown by an $ \bar{x} $ chart.

Accepted Answer

A) True 
 B)False

Exam 3: Quality and Performance

When should complete inspection be used?

The investment a company makes in training employees to perform their duties and redesigning products and processes to improve them would be categorized as prevention costs.

One chart commonly used for quality measures based on product or service attributes is the xˉ \bar{x} xˉ chart.

Small groups of employees and supervisors that meet to identify, analyze, and solve process and quality problems are known as ________.

Quality measured with reference to price is captured by the notion of:

Samples of size 4 were taken from a process that had a target of 25 ounces with upper and lower specification limits of 30 ounces and 20 ounces respectively. Create the appropriate control charts and determine whether the process is in control.

Applying Six Sigma to service processes is more challenging than for manufacturing processes.

A process with a target of 25 was used to generate the following data points. Is the process properly centered?

The defect rate for a product has historically been about 2.0%. What are the upper and lower control chart limits if you wish to use a sample size of 100 and 3-sigma limits?

Because Six Sigma involves the elimination of defects, it can only be applied in manufacturing processes.

Quality at the source refers to the effort to catch and correct any mistakes as they are being made by those that are making them.

With respect to the systems approach of TQM, failure to manage the ________ is where most companies fall short in achieving quality objectives.

What is the long-term impact of unethical business practices on product and service quality?

The upper and lower control limits for a component are 0.150 cm. and 0.120 cm., with a process target of .135 cm. The process standard deviation is 0.004 cm. and the process average is 0.138 cm. What is the process capability index?

Process centering is shown by an xˉ \bar{x} xˉ chart.

Using Operations to Create Value

Process Strategy and Analysis

Capacity Planning

Constraint Management

Lean Systems

Project Management

Forecasting

Inventory Management

Operations Planning and Scheduling

Resource Planning

Supply Chain Design

Supply Chain Logistic Networks

Supply Chain Integration

Supply Chain Sustainability

Supplement A Decision Making

Supplement J Operations Scheduling

Supplement K Layout

Supplement B Waiting Lines

Supplement C Special Inventory Models

Supplement D Linear Programming

Supplement E Simulation

Supplement F Financial Analysis

Supplement G Acceptance Sampling Plans

Supplement H Measuring Output Rates

Supplement I Learning Curve Analysis

Filters

One chart commonly used for quality measures based on product or service attributes is the $\bar{x}$ chart.

Process centering is shown by an $\bar{x}$ chart.