Question 1

Which of the following is a method for breaking process into a series of steps in order to eliminate defects and produce near perfect results?

Accepted Answer

Six Sigma management is a method for breaking process into a series of steps in order to eliminate defects and produce near perfect results.

Question 2

Total Production Maintenance is among the tools of Lean Six Sigma.

Accepted Answer

Total Production Maintenance is a tool used in Lean Six Sigma to improve the overall efficiency and effectiveness of equipment by focusing on prevention, proactive maintenance, and continuous improvement.

Question 3

SCENARIO 18-8
Recently, a university switched to a new type of computer-based registration. The registrar is
concerned with the amount of time students are spending on the computer registering under the new
system. She decides to randomly select 8 students on each of the 12 days of the registration and
determine the time each spends on the computer registering. The range, mean, and standard deviation
of the times required to register are in the table that follows. $$\begin{array} { r l r l } 
\underline { \text { Day } } & \text { Range } & \underline { \text { Mean } } & \underline { \text { Std.Dev. } } \
1 & 10 & 5.250 & 3.4949 \
2 & 31 & 15.250 & 10.3060 \
3 & 13 & 20.375 & 4.9262 \
4 & 21 & 22.875 & 8.3911 \
5 & 35 & 8.500 & 11.3767 \
6 & 18 & 7.875 & 6.9372 \
7 & 25 & 11.250 & 8.5815 \
8 & 30 & 7.875 & 9.5235 \
9 & 17 & 10.250 & 6.3640 \
10 & 22 & 9.500 & 7.8740 \
11 & 27 & 7.875 & 8.7086 \
12 & 26 & 12.875 & 9.3723
\end{array}$$
-Referring to Scenario 18-8, an R chart is to be constructed for the time required to register. The
lower control limit for this data set is ________.

Accepted Answer

The answer of SCENARIO 18-8
Recently, a university switched to a...

Question 4

Which of the following is not part of the DMAIC process in Six Sigma management?

Accepted Answer

The DMAIC process stands for Define, Measure, Analyze, Improve, Control. "Do" is not a part of the DMAIC process in Six Sigma management.

Question 5

SCENARIO 18-8
Recently, a university switched to a new type of computer-based registration. The registrar is
concerned with the amount of time students are spending on the computer registering under the new
system. She decides to randomly select 8 students on each of the 12 days of the registration and
determine the time each spends on the computer registering. The range, mean, and standard deviation
of the times required to register are in the table that follows. $$\begin{array} { r l r l } 
\underline { \text { Day } } & \text { Range } & \underline { \text { Mean } } & \underline { \text { Std.Dev. } } \
1 & 10 & 5.250 & 3.4949 \
2 & 31 & 15.250 & 10.3060 \
3 & 13 & 20.375 & 4.9262 \
4 & 21 & 22.875 & 8.3911 \
5 & 35 & 8.500 & 11.3767 \
6 & 18 & 7.875 & 6.9372 \
7 & 25 & 11.250 & 8.5815 \
8 & 30 & 7.875 & 9.5235 \
9 & 17 & 10.250 & 6.3640 \
10 & 22 & 9.500 & 7.8740 \
11 & 27 & 7.875 & 8.7086 \
12 & 26 & 12.875 & 9.3723
\end{array}$$
-Referring to Scenario 18-8, an R chart is to be constructed for the time required to register. One
way to create the lower control limit involves multiplying the mean of the sample ranges by $D _ { 3 }$ .
For this data set, the value of $D _ { 3 }$ is ________.

Accepted Answer

The answer of SCENARIO 18-8
Recently, a university switched to a...

Question 6

SS method is among the tools of Lean Six Sigma.

Accepted Answer

SS method stands for Statistical Sampling which is one of the tools used in the Six Sigma methodology for quality improvement.

Question 7

Developing operational definitions for each critical-to-quality characteristic involves which part of the DMAIC process?

Accepted Answer

Developing operational definitions is a part of the Measure phase of the DMAIC process, where the team establishes the metrics and methods for data collection to understand the current performance level of the critical-to-quality characteristics.

Question 8

Quick Changeover Techniques is among the tools of Lean Six Sigma.

Accepted Answer

Quick Changeover Techniques, also known as Single Minute Exchange of Die (SMED), is a technique used in Lean Six Sigma to reduce the time it takes to change from one process or product to another. It aims to minimize production downtime and increase productivity.

Question 9

SCENARIO 18-8
Recently, a university switched to a new type of computer-based registration. The registrar is
concerned with the amount of time students are spending on the computer registering under the new
system. She decides to randomly select 8 students on each of the 12 days of the registration and
determine the time each spends on the computer registering. The range, mean, and standard deviation
of the times required to register are in the table that follows. $$\begin{array} { r l r l } 
\underline { \text { Day } } & \text { Range } & \underline { \text { Mean } } & \underline { \text { Std.Dev. } } \
1 & 10 & 5.250 & 3.4949 \
2 & 31 & 15.250 & 10.3060 \
3 & 13 & 20.375 & 4.9262 \
4 & 21 & 22.875 & 8.3911 \
5 & 35 & 8.500 & 11.3767 \
6 & 18 & 7.875 & 6.9372 \
7 & 25 & 11.250 & 8.5815 \
8 & 30 & 7.875 & 9.5235 \
9 & 17 & 10.250 & 6.3640 \
10 & 22 & 9.500 & 7.8740 \
11 & 27 & 7.875 & 8.7086 \
12 & 26 & 12.875 & 9.3723
\end{array}$$
-Referring to Scenario 18-8, an $\bar { X }$ chart is to be used for the time required to register. One way to
obtain the control limits is to take the grand mean and add and subtract the product of A2 times
the mean of the sample ranges. For this data set, the value of $A _ { 2 }$ is ________.

Accepted Answer

The answer of SCENARIO 18-8
Recently, a university switched to a...

Question 10

Determining the root causes of why defects can occur along with the variables in the process that cause these defects to occur involves which part of the DMAIC process?

Accepted Answer

Analyze is the part of the DMAIC process that involves identifying and understanding the root causes of defects and the variables that contribute to their occurrence. This analysis helps to inform the development of improvement solutions during the Improve stage.

Question 11

SCENARIO 18-8
Recently, a university switched to a new type of computer-based registration. The registrar is
concerned with the amount of time students are spending on the computer registering under the new
system. She decides to randomly select 8 students on each of the 12 days of the registration and
determine the time each spends on the computer registering. The range, mean, and standard deviation
of the times required to register are in the table that follows. $$\begin{array} { r l r l } 
\underline { \text { Day } } & \text { Range } & \underline { \text { Mean } } & \underline { \text { Std.Dev. } } \
1 & 10 & 5.250 & 3.4949 \
2 & 31 & 15.250 & 10.3060 \
3 & 13 & 20.375 & 4.9262 \
4 & 21 & 22.875 & 8.3911 \
5 & 35 & 8.500 & 11.3767 \
6 & 18 & 7.875 & 6.9372 \
7 & 25 & 11.250 & 8.5815 \
8 & 30 & 7.875 & 9.5235 \
9 & 17 & 10.250 & 6.3640 \
10 & 22 & 9.500 & 7.8740 \
11 & 27 & 7.875 & 8.7086 \
12 & 26 & 12.875 & 9.3723
\end{array}$$
-Referring to Scenario 18-8, construct an R chart for the time required to register.

Accepted Answer

The answer of SCENARIO 18-8
Recently, a university switched to a...

Question 12

Maintaining the gains that have been made with a revised process in the long term by avoiding potential problems that can occur when a process is changed involves which part of the DMAIC
Process?

Accepted Answer

The Control phase of the DMAIC process focuses on maintaining the improvements made during the Improve phase and ensuring that the process remains stable and sustainable over time.

Question 13

SCENARIO 18-8
Recently, a university switched to a new type of computer-based registration. The registrar is
concerned with the amount of time students are spending on the computer registering under the new
system. She decides to randomly select 8 students on each of the 12 days of the registration and
determine the time each spends on the computer registering. The range, mean, and standard deviation
of the times required to register are in the table that follows. $$\begin{array} { r l r l } 
\underline { \text { Day } } & \text { Range } & \underline { \text { Mean } } & \underline { \text { Std.Dev. } } \
1 & 10 & 5.250 & 3.4949 \
2 & 31 & 15.250 & 10.3060 \
3 & 13 & 20.375 & 4.9262 \
4 & 21 & 22.875 & 8.3911 \
5 & 35 & 8.500 & 11.3767 \
6 & 18 & 7.875 & 6.9372 \
7 & 25 & 11.250 & 8.5815 \
8 & 30 & 7.875 & 9.5235 \
9 & 17 & 10.250 & 6.3640 \
10 & 22 & 9.500 & 7.8740 \
11 & 27 & 7.875 & 8.7086 \
12 & 26 & 12.875 & 9.3723
\end{array}$$
-Referring to Scenario 18-8, an $\bar { X }$ chart is to be used for the time required to register. The center
line of this chart is located at __________.

Accepted Answer

The answer of SCENARIO 18-8
Recently, a university switched to a...

Question 14

The focus of Lean Six Sigma is on removing non-value added steps and waste
which can exist in any part of an organization.

Accepted Answer

This statement is true. The entire focus of Lean Six Sigma is on identifying and removing non-value added activities and waste in order to streamline processes and increase efficiency in any part of an organization.

Question 15

SCENARIO 18-8
Recently, a university switched to a new type of computer-based registration. The registrar is
concerned with the amount of time students are spending on the computer registering under the new
system. She decides to randomly select 8 students on each of the 12 days of the registration and
determine the time each spends on the computer registering. The range, mean, and standard deviation
of the times required to register are in the table that follows. $$\begin{array} { r l r l } 
\underline { \text { Day } } & \text { Range } & \underline { \text { Mean } } & \underline { \text { Std.Dev. } } \
1 & 10 & 5.250 & 3.4949 \
2 & 31 & 15.250 & 10.3060 \
3 & 13 & 20.375 & 4.9262 \
4 & 21 & 22.875 & 8.3911 \
5 & 35 & 8.500 & 11.3767 \
6 & 18 & 7.875 & 6.9372 \
7 & 25 & 11.250 & 8.5815 \
8 & 30 & 7.875 & 9.5235 \
9 & 17 & 10.250 & 6.3640 \
10 & 22 & 9.500 & 7.8740 \
11 & 27 & 7.875 & 8.7086 \
12 & 26 & 12.875 & 9.3723
\end{array}$$
-Referring to Scenario 18-8, based on the $\bar { X }$ chart, it appears that the process is in
control.

Accepted Answer

The process is not in control because there is significant variability in the means across different days, indicating inconsistency in the registration times.

Question 16

SCENARIO 18-8
Recently, a university switched to a new type of computer-based registration. The registrar is
concerned with the amount of time students are spending on the computer registering under the new
system. She decides to randomly select 8 students on each of the 12 days of the registration and
determine the time each spends on the computer registering. The range, mean, and standard deviation
of the times required to register are in the table that follows. $$\begin{array} { r l r l } 
\underline { \text { Day } } & \text { Range } & \underline { \text { Mean } } & \underline { \text { Std.Dev. } } \
1 & 10 & 5.250 & 3.4949 \
2 & 31 & 15.250 & 10.3060 \
3 & 13 & 20.375 & 4.9262 \
4 & 21 & 22.875 & 8.3911 \
5 & 35 & 8.500 & 11.3767 \
6 & 18 & 7.875 & 6.9372 \
7 & 25 & 11.250 & 8.5815 \
8 & 30 & 7.875 & 9.5235 \
9 & 17 & 10.250 & 6.3640 \
10 & 22 & 9.500 & 7.8740 \
11 & 27 & 7.875 & 8.7086 \
12 & 26 & 12.875 & 9.3723
\end{array}$$
-Referring to Scenario 18-8, an $\bar { X }$ chart is to be used for the time required to register. The lower
control limit for this data set is ________, while the upper control limit is ________.

Accepted Answer

The answer of SCENARIO 18-8
Recently, a university switched to a...

Question 17

SCENARIO 18-8
Recently, a university switched to a new type of computer-based registration. The registrar is
concerned with the amount of time students are spending on the computer registering under the new
system. She decides to randomly select 8 students on each of the 12 days of the registration and
determine the time each spends on the computer registering. The range, mean, and standard deviation
of the times required to register are in the table that follows. $$\begin{array} { r l r l } 
\underline { \text { Day } } & \text { Range } & \underline { \text { Mean } } & \underline { \text { Std.Dev. } } \
1 & 10 & 5.250 & 3.4949 \
2 & 31 & 15.250 & 10.3060 \
3 & 13 & 20.375 & 4.9262 \
4 & 21 & 22.875 & 8.3911 \
5 & 35 & 8.500 & 11.3767 \
6 & 18 & 7.875 & 6.9372 \
7 & 25 & 11.250 & 8.5815 \
8 & 30 & 7.875 & 9.5235 \
9 & 17 & 10.250 & 6.3640 \
10 & 22 & 9.500 & 7.8740 \
11 & 27 & 7.875 & 8.7086 \
12 & 26 & 12.875 & 9.3723
\end{array}$$
-Referring to Scenario 18-8, based on the R chart, it appears that the process is out
of control.

Accepted Answer

The answer of SCENARIO 18-8
Recently, a university switched to a...

Question 18

SCENARIO 18-8
Recently, a university switched to a new type of computer-based registration. The registrar is
concerned with the amount of time students are spending on the computer registering under the new
system. She decides to randomly select 8 students on each of the 12 days of the registration and
determine the time each spends on the computer registering. The range, mean, and standard deviation
of the times required to register are in the table that follows. $$\begin{array} { r l r l } 
\underline { \text { Day } } & \text { Range } & \underline { \text { Mean } } & \underline { \text { Std.Dev. } } \
1 & 10 & 5.250 & 3.4949 \
2 & 31 & 15.250 & 10.3060 \
3 & 13 & 20.375 & 4.9262 \
4 & 21 & 22.875 & 8.3911 \
5 & 35 & 8.500 & 11.3767 \
6 & 18 & 7.875 & 6.9372 \
7 & 25 & 11.250 & 8.5815 \
8 & 30 & 7.875 & 9.5235 \
9 & 17 & 10.250 & 6.3640 \
10 & 22 & 9.500 & 7.8740 \
11 & 27 & 7.875 & 8.7086 \
12 & 26 & 12.875 & 9.3723
\end{array}$$
-Referring to Scenario 18-8, an R chart is to be constructed for the time required to register. The
upper control limit for this data set is ________.

Accepted Answer

The answer of SCENARIO 18-8
Recently, a university switched to a...

Question 19

SCENARIO 18-8
Recently, a university switched to a new type of computer-based registration. The registrar is
concerned with the amount of time students are spending on the computer registering under the new
system. She decides to randomly select 8 students on each of the 12 days of the registration and
determine the time each spends on the computer registering. The range, mean, and standard deviation
of the times required to register are in the table that follows. $$\begin{array} { r l r l } 
\underline { \text { Day } } & \text { Range } & \underline { \text { Mean } } & \underline { \text { Std.Dev. } } \
1 & 10 & 5.250 & 3.4949 \
2 & 31 & 15.250 & 10.3060 \
3 & 13 & 20.375 & 4.9262 \
4 & 21 & 22.875 & 8.3911 \
5 & 35 & 8.500 & 11.3767 \
6 & 18 & 7.875 & 6.9372 \
7 & 25 & 11.250 & 8.5815 \
8 & 30 & 7.875 & 9.5235 \
9 & 17 & 10.250 & 6.3640 \
10 & 22 & 9.500 & 7.8740 \
11 & 27 & 7.875 & 8.7086 \
12 & 26 & 12.875 & 9.3723
\end{array}$$
-Referring to Scenario 18-8, construct an $\bar { X }$ chart for the time required to register.

Accepted Answer

The answer of SCENARIO 18-8
Recently, a university switched to a...

Question 20

SCENARIO 18-8
Recently, a university switched to a new type of computer-based registration. The registrar is
concerned with the amount of time students are spending on the computer registering under the new
system. She decides to randomly select 8 students on each of the 12 days of the registration and
determine the time each spends on the computer registering. The range, mean, and standard deviation
of the times required to register are in the table that follows. $$\begin{array} { r l r l } 
\underline { \text { Day } } & \text { Range } & \underline { \text { Mean } } & \underline { \text { Std.Dev. } } \
1 & 10 & 5.250 & 3.4949 \
2 & 31 & 15.250 & 10.3060 \
3 & 13 & 20.375 & 4.9262 \
4 & 21 & 22.875 & 8.3911 \
5 & 35 & 8.500 & 11.3767 \
6 & 18 & 7.875 & 6.9372 \
7 & 25 & 11.250 & 8.5815 \
8 & 30 & 7.875 & 9.5235 \
9 & 17 & 10.250 & 6.3640 \
10 & 22 & 9.500 & 7.8740 \
11 & 27 & 7.875 & 8.7086 \
12 & 26 & 12.875 & 9.3723
\end{array}$$
-Referring to Scenario 18-8, an R chart is to be constructed for the time required to register. One
way to create the upper control limit involves multiplying the mean of the sample ranges by $D _ { 4 }$ .
For this data set, the value of $D _ { 4 }$ is ________.

Accepted Answer

The answer of SCENARIO 18-8
Recently, a university switched to a...

Quiz 18: Statistical Applications in Quality Management

Which of the following is a method for breaking process into a series of steps in order to eliminate defects and produce near perfect results?

Total Production Maintenance is among the tools of Lean Six Sigma.

Which of the following is not part of the DMAIC process in Six Sigma management?

SS method is among the tools of Lean Six Sigma.

Developing operational definitions for each critical-to-quality characteristic involves which part of the DMAIC process?

Quick Changeover Techniques is among the tools of Lean Six Sigma.

Determining the root causes of why defects can occur along with the variables in the process that cause these defects to occur involves which part of the DMAIC process?

Maintaining the gains that have been made with a revised process in the long term by avoiding potential problems that can occur when a process is changed involves which part of the DMAIC Process?

The focus of Lean Six Sigma is on removing non-value added steps and waste which can exist in any part of an organization.