Question 1

Acceptance sampling is most useful when the cost consequences of passing defectives are low.

Accepted Answer

A) True 
 B)False  True

Question 2

"Average outgoing quality" will show the average quality level of inspected and uninspected lots for any given incoming proportion defective.

Accepted Answer

A) True 
 B)False  False

Question 3

The Quality Manager for Graphics,Inc.is concerned about the quality of the lot of several thousand posters which her company printed this week and is now preparing to ship.If,based on her acceptance sample,she decides to ship this lot without inspection,which type error would be possible?

Accepted Answer

A)  Type I 
B)  Type II 
C)  Both Type I and Type II error 
D)  Neither Type I nor Type II error 
E)  Cannot be determined exactly 
A)  Type I 
B)  Type II 
C)  Both Type I and Type II error 
D)  Neither Type I nor Type II error 
E)  Cannot be determined exactly B

Question 4

The Quality Manager for Graphics,Inc.is concerned about the quality of the lot of several thousand posters which her company printed this week and is now preparing to ship.If she uses an acceptance sampling plan of n = 10 and c = 2,what is the probability that,if this lot is 10% defective,it will be accepted for shipment without inspection?

Accepted Answer

A)  0.9298 
B)  0.0702 
C)  0.8189 
D)  0.2198 
E)  0.5995 
A)  0.9298 
B)  0.0702 
C)  0.8189 
D)  0.2198 
E)  0.5995

Question 5

A firm that makes plastic wrapping material takes random samples of 50 items from each lot before it is sent to a customer.Lots contain 2,000 items each.Any lot with more than one defective is subjected to 100 percent inspection,and any defectives are replaced with good ones.
(i)Construct the OC curve for this plan.
(ii)Construct the AOQ curve for this plan.What is the approximate AOQ limit?

Accepted Answer

n = 50 (Us

Question 6

In acceptance sampling,the level of inspection automatically adjusts to the quality of lots being inspected,assuming that:

Accepted Answer

A)  a single-sampling plan is used. 
B)  double-sampling plans are used. 
C)  multiple-sampling plans are used. 
D)  "rejected" lots are subjected to 100 percent inspection. 
E)  none of the choices. 
A)  a single-sampling plan is used. 
B)  double-sampling plans are used. 
C)  multiple-sampling plans are used. 
D)  "rejected" lots are subjected to 100 percent inspection. 
E)  none of the choices.

Question 7

The purpose of acceptance sampling is to:

Accepted Answer

A)  estimate process quality. 
B)  estimate lot quality. 
C)  detect and eliminate defectives. 
D)  decide if a lot meets predetermined standards. 
E)  accept samples of products. 
A)  estimate process quality. 
B)  estimate lot quality. 
C)  detect and eliminate defectives. 
D)  decide if a lot meets predetermined standards. 
E)  accept samples of products.

Question 8

The average outgoing quality (AOQ)assumes that lots contain some given proportion defective.

Accepted Answer

A) True 
 B)False

Question 9

A lot can be "accepted" or "rejected" in a multiple-sampling plan:
I.after one sample is checked multiple times.
II.after two samples are taken.
III.after one or more samples are taken.

Accepted Answer

A)  I only 
B)  II only 
C)  III only 
D)  I or II 
E)  I or III 
A)  I only 
B)  II only 
C)  III only 
D)  I or II 
E)  I or III

Question 10

The Quality Manager for Microelectronics,Inc.is concerned about the quality of the batch of several thousand IC's (integrated circuits)which his company is about to ship.If he uses an acceptance sampling plan of n = 20 and c = 1,what is the probability that,if this batch is 15% defectives,it will be rejected and completely inspected prior to shipment?

Accepted Answer

A)  0.0263 
B)  0.1237 
C)  0.1756 
D)  0.8244 
E)  0.9737 
A)  0.0263 
B)  0.1237 
C)  0.1756 
D)  0.8244 
E)  0.9737

Question 11

The Quality Manager for Widgets,Inc.is concerned about the quality of the lot of several thousand widgets which his company produced this week and is now ready to ship.If the cost of replacing a defective widget once it has been shipped is $5.00,while the cost of complete (100%)inspection prior to shipment is 30 cents per widget,what is the point of indifference between complete inspection and shipment without inspection?

Accepted Answer

A)  1.67% defectives 
B)  3% defectives 
C)  5% defectives 
D)  6% defectives 
E)  16.7% defectives 
A)  1.67% defectives 
B)  3% defectives 
C)  5% defectives 
D)  6% defectives 
E)  16.7% defectives

Question 12

A lot can be "accepted" or "rejected" in a double-sampling plan:
I.after one sample is taken.
II.after two samples are taken.
III.after one sample is checked twice.

Accepted Answer

A)  I only 
B)  II only 
C)  III only 
D)  I or II 
E)  I or III 
A)  I only 
B)  II only 
C)  III only 
D)  I or II 
E)  I or III

Question 13

The Quality Manager for Graphics,Inc.is concerned about the quality of the lot of several thousand posters which her company printed this week and is now preparing to ship.If she uses an acceptance sampling plan of n = 10 and c = 2,what will be the average outgoing quality (AOQ)for lots with 20% defectives?

Accepted Answer

A)  0.13556 
B)  0.20000 
C)  0.23630 
D)  0.58434 
E)  0.32484 
A)  0.13556 
B)  0.20000 
C)  0.23630 
D)  0.58434 
E)  0.32484

Question 14

Which one of the following would not be a reason for using acceptance sampling?

Accepted Answer

A)  High cost of passing defectives 
B)  Large number of items 
C)  Destructive testing 
D)  Boredom and fatigue that would accompany complete inspection 
E)  All of the choices are reasons. 
A)  High cost of passing defectives 
B)  Large number of items 
C)  Destructive testing 
D)  Boredom and fatigue that would accompany complete inspection 
E)  All of the choices are reasons.

Question 15

The ability of an acceptance sampling plan to discriminate between good and bad quality lots is described by its operating characteristic curve.

Accepted Answer

A) True 
 B)False

Question 16

A double-sampling plan always requires a second sample.

Accepted Answer

A) True 
 B)False

Question 17

The ability of a sampling plan to discriminate between lots of high quality and lots of low quality is described by:

Accepted Answer

A)  a Gantt chart. 
B)  an operating characteristic curve. 
C)  an average outgoing quality curve. 
D)  a process control chart. 
E)  a range chart. 
A)  a Gantt chart. 
B)  an operating characteristic curve. 
C)  an average outgoing quality curve. 
D)  a process control chart. 
E)  a range chart.

Question 18

The Quality Manager for Microelectronics,Inc.is concerned about the quality of the batch of several thousand IC's (integrated circuits)which his company is about to ship.If he uses an acceptance sampling plan of n = 20 and c = 1,what will be the average outgoing quality (AOQ)for batches with 15% defectives?

Accepted Answer

A)  0.0263 
B)  0.1237 
C)  0.1756 
D)  0.8244 
E)  0.9737 
A)  0.0263 
B)  0.1237 
C)  0.1756 
D)  0.8244 
E)  0.9737

Question 19

The steeper an OC curve is,the less it tends to discriminate between good and bad lots.

Accepted Answer

A) True 
 B)False

Question 20

A Quality Inspector for Alpha-Beta Co.is concerned about the quality of the batch of several thousand Gizmos which his company produced this week and is preparing to ship.If the cost of replacing a defective Gizmo once it has been shipped is $2.00,while the cost of 100% inspection prior to shipment is $.40 each,at what point is he indifferent between 100% inspection or shipment without inspection?

Accepted Answer

A)  0% defectives 
B)  2% defectives 
C)  5% defectives 
D)  20% defectives 
E)  30% defectives 
A)  0% defectives 
B)  2% defectives 
C)  5% defectives 
D)  20% defectives 
E)  30% defectives

Acceptance sampling is most useful when the cost consequences of passing defectives are low.

"Average outgoing quality" will show the average quality level of inspected and uninspected lots for any given incoming proportion defective.

The Quality Manager for Graphics,Inc.is concerned about the quality of the lot of several thousand posters which her company printed this week and is now preparing to ship.If,based on her acceptance sample,she decides to ship this lot without inspection,which type error would be possible?

In acceptance sampling,the level of inspection automatically adjusts to the quality of lots being inspected,assuming that:

The purpose of acceptance sampling is to:

The average outgoing quality (AOQ)assumes that lots contain some given proportion defective.

A lot can be "accepted" or "rejected" in a multiple-sampling plan: I.after one sample is checked multiple times. II.after two samples are taken. III.after one or more samples are taken.

A lot can be "accepted" or "rejected" in a double-sampling plan: I.after one sample is taken. II.after two samples are taken. III.after one sample is checked twice.

Which one of the following would not be a reason for using acceptance sampling?

The ability of an acceptance sampling plan to discriminate between good and bad quality lots is described by its operating characteristic curve.

A double-sampling plan always requires a second sample.

The ability of a sampling plan to discriminate between lots of high quality and lots of low quality is described by:

The steeper an OC curve is,the less it tends to discriminate between good and bad lots.

Introduction to Operations Management

Competitiveness, Strategic Planning, and Productivity

Demand Forecasting

A: Product Design

B: Product Design

A: Strategic Capacity Planning

B: Strategic Capacity Planning

A: Process Design and Facility Layout

B: Process Design and Facility Layout

A: Design of Work Systems

B: Design of Work Systems

A: Location Planning and Analysis

B: Location Planning and Analysis

Management of Quality

A: Statistical Quality Control

Supply Chain Management

Inventory Management

Aggregate Operations Planning

Material Requirements Planning and Enterprise Resource Planning

A: Just-In-Time and Lean Production

B: Just-In-Time and Lean Production

Job and Staff Scheduling

Project Management

A: Waiting-Line Analysis

B: Waiting-Line Analysis

Filters

Exam 10: B: Statistical Quality Control

Acceptance sampling is most useful when the cost consequences of passing defectives are low.

"Average outgoing quality" will show the average quality level of inspected and uninspected lots for any given incoming proportion defective.

The Quality Manager for Graphics,Inc.is concerned about the quality of the lot of several thousand posters which her company printed this week and is now preparing to ship.If,based on her acceptance sample,she decides to ship this lot without inspection,which type error would be possible?

In acceptance sampling,the level of inspection automatically adjusts to the quality of lots being inspected,assuming that:

The purpose of acceptance sampling is to:

The average outgoing quality (AOQ)assumes that lots contain some given proportion defective.

A lot can be "accepted" or "rejected" in a multiple-sampling plan: I.after one sample is checked multiple times. II.after two samples are taken. III.after one or more samples are taken.

A lot can be "accepted" or "rejected" in a double-sampling plan: I.after one sample is taken. II.after two samples are taken. III.after one sample is checked twice.

Which one of the following would not be a reason for using acceptance sampling?

The ability of an acceptance sampling plan to discriminate between good and bad quality lots is described by its operating characteristic curve.

A double-sampling plan always requires a second sample.

The ability of a sampling plan to discriminate between lots of high quality and lots of low quality is described by:

The steeper an OC curve is,the less it tends to discriminate between good and bad lots.

Introduction to Operations Management

Competitiveness, Strategic Planning, and Productivity

Demand Forecasting

A: Product Design

B: Product Design

A: Strategic Capacity Planning

B: Strategic Capacity Planning

A: Process Design and Facility Layout

B: Process Design and Facility Layout

A: Design of Work Systems

B: Design of Work Systems

A: Location Planning and Analysis

B: Location Planning and Analysis

Management of Quality

A: Statistical Quality Control

Supply Chain Management

Inventory Management

Aggregate Operations Planning

Material Requirements Planning and Enterprise Resource Planning

A: Just-In-Time and Lean Production

B: Just-In-Time and Lean Production

Job and Staff Scheduling

Project Management

A: Waiting-Line Analysis

B: Waiting-Line Analysis

Filters