Question 1

SCENARIO 19-8
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.
 
-Referring to Scenario 19-8,based on the x̄ chart,it appears that the process is in control.

Accepted Answer

Without specific data or context from Scenario 19-8, it is not possible to determine if the process is in control based solely on the x̄ chart.

Question 2

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 involves identifying the root causes of defects and the variables that contribute to them. This step is crucial in finding solutions to the problems identified.

Question 3

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

Accepted Answer

Total Production Maintenance (TPM) aims to maximize the efficiency and effectiveness of equipment and machinery to eliminate breakdowns, defects, and waste in manufacturing processes. It is a key component of Lean Six Sigma methodologies which focus on reducing waste and variability in order to improve quality and productivity.

Question 4

SCENARIO 19-8
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.
 
-Referring to Scenario 19-8,based on the R chart,it appears that the process is out of control.

Accepted Answer

The answer of SCENARIO 19-8
Recently,a university switched to a new...

Question 5

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 is where efforts are made to sustain and standardize the improvements made in the Improve phase. It involves developing control plans, setting metrics to monitor progress, and implementing ongoing monitoring and maintenance procedures to prevent any drift back to the old process. Therefore, choice E is the best answer.

Question 6

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

Lean Six Sigma is all about identifying and eliminating waste and non-value added steps to improve efficiency and quality in any process or organization.

Question 7

SCENARIO 19-8
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.
 
-Referring to Scenario 19-8,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 19-8
Recently,a university switched to a new...

Question 8

SCENARIO 19-8
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.
 
-Referring to Scenario 19-8,an x̄ 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 19-8
Recently,a university switched to a new...

Question 9

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

Accepted Answer

Developing operational definitions falls under the "Measure" phase of DMAIC. In this phase, the critical-to-quality characteristics are identified and measured using data collection techniques to establish a baseline. Developing operational definitions helps to standardize the measurement process to ensure consistency and accuracy in data collection.

Question 10

SS method is among the tools of Lean Six Sigma.

Accepted Answer

SS method (or Single Minute Exchange of Die) is a tool used in Lean Six Sigma for reducing setup time and improving overall equipment effectiveness.

Question 11

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

Accepted Answer

The DMAIC process in Six Sigma management consists of five phases: Define, Measure, Analyze, Improve, and Control. "Do" is not one of the phases.

Question 12

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

Accepted Answer

Quick Changeover Techniques, also known as SMED (Single-Minute Exchange of Die), is a widely used Lean Six Sigma tool for reducing setup time in manufacturing processes.

Question 13

SCENARIO 19-8
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.
 
-Referring to Scenario 19-8,construct an x̄ chart for the time required to register.

Accepted Answer

The answer of SCENARIO 19-8
Recently,a university switched to a new...

Question 14

SCENARIO 19-8
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.
 
-Referring to Scenario 19-8,construct an R chart for the time required to register.

Accepted Answer

The answer of SCENARIO 19-8
Recently,a university switched to a new...

Question 15

SCENARIO 19-8
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.
 
-Referring to Scenario 19-8,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 19-8
Recently,a university switched to a new...

Question 16

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 a process into a series of steps in order to eliminate defects and produce near perfect results. It emphasizes on statistical methods and quality tools to improve business processes. Deming's 14 points management focuses on improving overall quality by changing management practices and involving employees while the Shewhart-Deming cycle is a quality control process that emphasizes continuous improvement through the cycle of Plan, Do, Check, and Act. The R chart and x̄ chart are quality control charts used to monitor process variability.

Question 17

SCENARIO 19-8
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.
 
-Referring to Scenario 19-8,an x̄ 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 19-8
Recently,a university switched to a new...

Question 18

SCENARIO 19-8 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. -Referring to Scenario 19-8,an x̄ 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 A₂ is .

Accepted Answer

The answer of SCENARIO 19-8
Recently,a university switched to a new...

Question 19

SCENARIO 19-8 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. -Referring to Scenario 19-8,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 D₄.For this data set,the value of D₄ is .

Accepted Answer

The answer of SCENARIO 19-8
Recently,a university switched to a new...

Question 20

SCENARIO 19-8 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. -Referring to Scenario 19-8,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 D₃.For this data set,the value of D₃ is .

Accepted Answer

The answer of SCENARIO 19-8
Recently,a university switched to a new...

Quiz 19: Statistical Applications in Quality Management

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?

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

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.

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

SS method is among the tools of Lean Six Sigma.

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

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

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?