Question 1

Which of the following is associated with producer's risk?

Accepted Answer

A)  LTPD 
B)  AQL 
C)  AOQL 
D)  SPC 
E)  Cpk 
A)  LTPD 
B)  AQL 
C)  AOQL 
D)  SPC 
E)  Cpk B

Question 2

When is the average outgoing quality level (AOQL) at its peak?

Accepted Answer

A)  when the incoming fraction defective is at a minimum 
B)  when the incoming fraction defective is at a maximum 
C)  when the outgoing fraction defective is at a minimum 
D)  when the outgoing fraction defective is constant 
E)  when the outgoing fraction defective begins to increase 
A)  when the incoming fraction defective is at a minimum 
B)  when the incoming fraction defective is at a maximum 
C)  when the outgoing fraction defective is at a minimum 
D)  when the outgoing fraction defective is constant 
E)  when the outgoing fraction defective begins to increase B

Question 3

A quality inspector for Alpha-Beta Co. is concerned about the quality of the batch of several thousand blank DVD disks which his company produced this week and is preparing to ship. If he uses an acceptance sampling plan of n = 5 and c = 2, what will be the average outgoing quality for batches with 40 percent defectives?

Accepted Answer

A)  .1270 
B)  .2730 
C)  .3174 
D)  .6826 
E)  .7270 
A)  .1270 
B)  .2730 
C)  .3174 
D)  .6826 
E)  .7270 B

Question 4

A Type II (beta) error occurs when:

Accepted Answer

A)  a bad lot is accepted. 
B)  a good lot is rejected. 
C)  a bad lot is rejected. 
D)  a good lot is accepted. 
E)  a rejected lot is reinspected. 
A)  a bad lot is accepted. 
B)  a good lot is rejected. 
C)  a bad lot is rejected. 
D)  a good lot is accepted. 
E)  a rejected lot is reinspected.

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.
(A) Construct the OC curve for this plan.
(B) Construct the AOQ curve for this plan. What is the approximate AOQ limit?

Accepted Answer

Using the Poisson distribution with vari

Question 6

Acceptance sampling procedures are applicable for inspection both before and after production.

Accepted Answer

A) True 
 B)False

Question 7

A quality inspector for Alpha-Beta Co. is concerned about the quality of the batch of several thousand blank DVD disks which his company produced this week and is preparing to ship. If, based on his acceptance sample, he decides to ship this batch without inspection, which type error would be possible?

Accepted Answer

A)  inspector's error 
B)  producer's error 
C)  Type I error 
D)  Type II error 
E)  both Type I and Type II errors 
A)  inspector's error 
B)  producer's error 
C)  Type I error 
D)  Type II error 
E)  both Type I and Type II errors

Question 8

Suppose that only two incoming fraction defective levels, 4 percent and 8 percent, are possible. These incoming fraction defective levels are equally likely. At a 4 percent incoming fraction defective, there's a 60 percent chance that a lot will be accepted. At 8 percent incoming fraction defective, there's a 20 percent chance that a lot will be accepted. Lots that are not accepted are subject to 100 percent sorting. What is average outgoing quality?

Accepted Answer

A)  40 percent 
B)  20 percent 
C)  10 percent 
D)  4 percent 
E)  2 percent 
A)  40 percent 
B)  20 percent 
C)  10 percent 
D)  4 percent 
E)  2 percent

Question 9

Acceptance sampling procedures can be applied to both attribute and variables inspection.

Accepted Answer

A) True 
 B)False

Question 10

The quality manager for Microelectronics, Inc., is concerned about the quality of the batch of several thousand Z-box games 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 percent defectives, it will be rejected and completely inspected prior to shipment?

Accepted Answer

A)  .0263 
B)  .1237 
C)  .1756 
D)  .8244 
E)  .9737 
A)  .0263 
B)  .1237 
C)  .1756 
D)  .8244 
E)  .9737

Question 11

An OC curve shows:

Accepted Answer

A)  average outgoing quality. 
B)  the average outgoing quality limit. 
C)  out-of-control criteria. 
D)  operating control. 
E)  probability of acceptance versus lot quality. 
A)  average outgoing quality. 
B)  the average outgoing quality limit. 
C)  out-of-control criteria. 
D)  operating control. 
E)  probability of acceptance versus lot quality.

Question 12

Suppose we have a lot of several thousand units of a finished good. If this lot were 20 percent defective, what type error would be possible? For an acceptance sampling plan with n = 20 and c = 2, what would be the risk of this error?

Accepted Answer

Type II er

Question 13

A lot can be "accepted" or "rejected" in a multiple-sampling plan:

Accepted Answer

A)  after one sample is taken. 
B)  after two samples are taken. 
C)  after three or more samples are taken. 
D)  all of the choices. 
E)  none of the choices. 
A)  after one sample is taken. 
B)  after two samples are taken. 
C)  after three or more samples are taken. 
D)  all of the choices. 
E)  none of the choices.

Question 14

A double-sampling plan requires a second sample of exactly twice the size of the first sample.

Accepted Answer

A) True 
 B)False

Question 15

Suppose we have a lot of several thousand units of a finished good. If n = 20 and c = 2, what is the probability that, if this lot were 5 percent defective, it would be accepted for shipment without inspection? 10 percent defective? 15 percent? 20 percent?

Accepted Answer

.9245; .67

Question 16

A firm uses acceptance sampling to evaluate batches of inputs. Ideally, the defect rate would be no more than 3.5 percent. The firm knows that on occasion, batches with that defect rate or higher might be rejected. However, if the defect rate is less than or equal to 3.5 percent, the firm would like there to be very little chance of that batch being rejected. This value, 3.5 percent, is the firm's:

Accepted Answer

Acceptable

Question 17

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 errors 
D)  neither Type I nor Type II error 
E)  cannot be determined without further data 
A)  Type I 
B)  Type II 
C)  both Type I and Type II errors 
D)  neither Type I nor Type II error 
E)  cannot be determined without further data

Question 18

A lot can be "accepted" or "rejected" in a double-sampling plan:

Accepted Answer

A)  after one sample is taken. 
B)  after two samples are taken. 
C)  only after two samples are taken. 
D)  All choices are correct. 
E)  Only after one and after two samples are taken is correct. 
A)  after one sample is taken. 
B)  after two samples are taken. 
C)  only after two samples are taken. 
D)  All choices are correct. 
E)  Only after one and after two samples are taken is correct.

Question 19

A quality inspector for Alpha-Beta Co. is concerned about the quality of the batch of several thousand blank DVD disks which his company produced this week and is preparing to ship. If he uses an acceptance sampling plan of n = 5 and c = 2, what is the probability that, if this batch is 40 percent defective, it will be rejected and receive 100 percent inspection prior to shipment?

Accepted Answer

A)  .1270 
B)  .2730 
C)  .3174 
D)  .6826 
E)  .7270 
A)  .1270 
B)  .2730 
C)  .3174 
D)  .6826 
E)  .7270

Question 20

If the value for average outgoing quality increases, this means that __________ defective units are being passed on.

Accepted Answer

The answer of If the value for average outgoing quality...

Which of the following is associated with producer's risk?

When is the average outgoing quality level (AOQL) at its peak?

A Type II (beta) error occurs when:

Acceptance sampling procedures are applicable for inspection both before and after production.

Acceptance sampling procedures can be applied to both attribute and variables inspection.

An OC curve shows:

Suppose we have a lot of several thousand units of a finished good. If this lot were 20 percent defective, what type error would be possible? For an acceptance sampling plan with n = 20 and c = 2, what would be the risk of this error?

A lot can be "accepted" or "rejected" in a multiple-sampling plan:

A double-sampling plan requires a second sample of exactly twice the size of the first sample.

Suppose we have a lot of several thousand units of a finished good. If n = 20 and c = 2, what is the probability that, if this lot were 5 percent defective, it would be accepted for shipment without inspection? 10 percent defective? 15 percent? 20 percent?

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?

A lot can be "accepted" or "rejected" in a double-sampling plan:

If the value for average outgoing quality increases, this means that __________ defective units are being passed on.

Introduction to Operations Management

Competitiveness, Strategy, and Productivity

Forecasting

Product and Service Design

Extension: Reliability

Strategic Capacity Planning for Products and Services

Extension: Decision Theory

Process Selection and Facility Layout

Work Design and Measurement

Extension: Learning Curves

Location Planning and Analysis

Extension: The Transportation Model

Management of Quality

Quality Control

Aggregate Planning and Master Scheduling

MRP and ERP

Inventory Management

Jit and Lean Operations

Extension: Maintenance

Supply Chain Management

Scheduling

Project Management

Management of Waiting Lines

Linear Programming

Filters

Exam 10: Extension: Acceptance Sampling

Which of the following is associated with producer's risk?

When is the average outgoing quality level (AOQL) at its peak?

A Type II (beta) error occurs when:

Acceptance sampling procedures are applicable for inspection both before and after production.

Acceptance sampling procedures can be applied to both attribute and variables inspection.

An OC curve shows:

Suppose we have a lot of several thousand units of a finished good. If this lot were 20 percent defective, what type error would be possible? For an acceptance sampling plan with n = 20 and c = 2, what would be the risk of this error?

A lot can be "accepted" or "rejected" in a multiple-sampling plan:

A double-sampling plan requires a second sample of exactly twice the size of the first sample.

Suppose we have a lot of several thousand units of a finished good. If n = 20 and c = 2, what is the probability that, if this lot were 5 percent defective, it would be accepted for shipment without inspection? 10 percent defective? 15 percent? 20 percent?

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?

A lot can be "accepted" or "rejected" in a double-sampling plan:

If the value for average outgoing quality increases, this means that __________ defective units are being passed on.

Introduction to Operations Management

Competitiveness, Strategy, and Productivity

Forecasting

Product and Service Design

Extension: Reliability

Strategic Capacity Planning for Products and Services

Extension: Decision Theory

Process Selection and Facility Layout

Work Design and Measurement

Extension: Learning Curves

Location Planning and Analysis

Extension: The Transportation Model

Management of Quality

Quality Control

Aggregate Planning and Master Scheduling

MRP and ERP

Inventory Management

Jit and Lean Operations

Extension: Maintenance

Supply Chain Management

Scheduling

Project Management

Management of Waiting Lines

Linear Programming

Filters