Question 1

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) low cost of passing defectives. 
A) high cost of passing defectives. 
B) large number of items. 
C) destructive testing. 
D) boredom and fatigue that would accompany complete inspection. 
E) low cost of passing defectives.

Question 2

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 3

The AQL indicates:

Accepted Answer

A) acceptable quality level 
B) average quality level 
C) actual quality level 
D) aggregate quality level 
E) approximate quality level 
A) acceptable quality level 
B) average quality level 
C) actual quality level 
D) aggregate quality level 
E) approximate quality level

Question 4

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 5

Acceptance sampling is a form of inspection applied to items during an ongoing process.

Accepted Answer

A) True 
 B)False

Question 6

A good sampling plan will occasionally reject a lot with very good quality.

Accepted Answer

A) True 
 B)False

Question 7

If the cost of replacing a defective DVD disk 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 and 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

Question 8

An AOQ curve shows:

Accepted Answer

A) the maximum quality 
B) average outgoing quality relative to incoming quality 
C) how well a sampling plan can discriminate between good and bad lots 
D) the actual quality level 
E) "good" quality 
A) the maximum quality 
B) average outgoing quality relative to incoming quality 
C) how well a sampling plan can discriminate between good and bad lots 
D) the actual quality level 
E) "good" quality

Question 9

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

Question 10

An alternative to acceptance sampling is 100% inspection.

Accepted Answer

A) True 
 B)False

Question 11

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

Question 12

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...

Question 13

A manufacturer purchases large quantities of metal brackets from several suppliers.The brackets are shipped in lots of 8,000 each.Random samples of 40 brackets are taken from each lot, and the lot is rejected if any defectives are discovered.Rejected lots are subjected to 100 percent inspection, and any defectives are replaced with good brackets.Determine the average outgoing quality limit for this sampling plan.

Accepted Answer

Using the Poisson distribution

Question 14

Acceptance sampling is applied to batches of items during the production process.

Accepted Answer

A) True 
 B)False

Question 15

Acceptance sampling plans might call for selection of:

Accepted Answer

A) one or more samples 
B) a variable number of samples based on actual results 
C) random inspections 
D) outside audits by testing agencies 
E) 100% inspection 
A) one or more samples 
B) a variable number of samples based on actual results 
C) random inspections 
D) outside audits by testing agencies 
E) 100% inspection

Question 16

A firm uses acceptance sampling to evaluate batches of inputs.Ideally, the defect rate would be no more than 3.5%.The firm knows that on occasion, batches with higher defect rates will be accepted.However, if the defect rate reaches 7%, the firm would like there to be very little chance of that batch being accepted.This value, 7%, is the firm's ______.

Accepted Answer

Lot Tolera

Question 17

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 without further data 
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 without further data

Question 18

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

Accepted Answer

Acceptable

Question 19

If this lot were 20% defective, what type error would be possible? For an acceptance sampling plan with c = 2, what would be the risk of this error?

Accepted Answer

Type II er

Question 20

If he uses an acceptance sampling plan of n = 5 and c = 2, what is the probability that, if this batch is 40% defective, it will be rejected and receive 100% inspection prior to shipment?

Accepted Answer

A) 0.1270 
B) 0.2730 
C) 0.3174 
D) 0.6826 
E) 0.7270 
A) 0.1270 
B) 0.2730 
C) 0.3174 
D) 0.6826 
E) 0.7270

Exam 24: Extension 10: Acceptance Sampling

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

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?

The AQL indicates:

An OC curve shows:

Acceptance sampling is a form of inspection applied to items during an ongoing process.

A good sampling plan will occasionally reject a lot with very good quality.

If the cost of replacing a defective DVD disk 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 and shipment without inspection?

An AOQ curve shows:

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

An alternative to acceptance sampling is 100% inspection.

If the value for Average Outgoing Quality increases, this means that __________ defective units are being passed on.

Acceptance sampling is applied to batches of items during the production process.

Acceptance sampling plans might call for selection of:

If, based on her acceptance sample, she decides to ship this lot without inspection, which type error would be possible?

If this lot were 20% defective, what type error would be possible? For an acceptance sampling plan with c = 2, what would be the risk of this error?

If he uses an acceptance sampling plan of n = 5 and c = 2, what is the probability that, if this batch is 40% defective, it will be rejected and receive 100% inspection prior to shipment?

Introduction to Operations Management

Competitiveness, Strategy, and Productivity

Forecasting

Product and Service Design

Strategic Capacity Planning for Products and Services

Process Selection and Facility Layout

Work Design and Measurement

Location Planning and Analysis

Management of Quality

Quality Control

Aggregate Planning and Master Scheduling

MRP and ERP

Inventory Management

Jit and Lean Operations

Supply Chain Management

Scheduling

Project Management

Management of Waiting Lines

Linear Programming

Extension 4: Reliability

Extension 5: Decision Theory

Extension 7: Learning Curves

Extension 8: The Transportation Model

Extension 14: Maintenance

Filters