Question 1

For a given AQL and LTPD,which one of the following statements about the single-sampling plan is TRUE?

Accepted Answer

A) If c stays constant but n is increased,both the producer's risk and the consumer's risk will increase. 
B) If c stays constant but n is increased,both the producer's risk and the consumer's risk will decrease. 
C) If n stays constant but c is increased,the producer's risk will decrease and the consumer's risk will increase. 
D) If n stays constant but c is increased,the producer's risk will increase and the consumer's risk will decrease. 
A) If c stays constant but n is increased,both the producer's risk and the consumer's risk will increase. 
B) If c stays constant but n is increased,both the producer's risk and the consumer's risk will decrease. 
C) If n stays constant but c is increased,the producer's risk will decrease and the consumer's risk will increase. 
D) If n stays constant but c is increased,the producer's risk will increase and the consumer's risk will decrease.

Question 2

A double-sampling plan has n1 = 50,n2 = 100,c1 = 2,and c2 = 4.Suppose the first sample revealed two defectives.What should be done?

Accepted Answer

A) Reject the entire lot. 
B) Take a second sampling of 100 units. 
C) Accept the entire lot. 
D) Repeat the tests on the first sample. 
A) Reject the entire lot. 
B) Take a second sampling of 100 units. 
C) Accept the entire lot. 
D) Repeat the tests on the first sample.

Question 3

A single-sampling plan has n = 200 and c = 6.A sample is taken and five items are found to be defective.What should be done?

Accepted Answer

A) Another sample should be taken. 
B) The lot should be rejected. 
C) The lot should be accepted. 
D) The five items should be repaired,and then the entire lot should be accepted. 
A) Another sample should be taken. 
B) The lot should be rejected. 
C) The lot should be accepted. 
D) The five items should be repaired,and then the entire lot should be accepted.

Question 4

Which of the following is an example of a type II error?

Accepted Answer

A) convicting an innocent defendant 
B) returning your "dead" stereo for warranty repair when its malfunction was caused by it not being plugged in 
C) halting production to adjust a machine when your process was actually in control 
D) eating food that has spoiled 
A) convicting an innocent defendant 
B) returning your "dead" stereo for warranty repair when its malfunction was caused by it not being plugged in 
C) halting production to adjust a machine when your process was actually in control 
D) eating food that has spoiled

Question 5

A single-sampling plan by attributes is needed for a purchased component.Given the following information,what is the producer's risk? Table G.1 is appended to this exam. Sample size = 125
Acceptance number (c)= 4
Acceptance quality level (AQL )= 0.02
Lot tolerance proportion defective (LTPD)= 0.07

Accepted Answer

A) .06 
B) .11 
C) .16 
D) .21 
A) .06 
B) .11 
C) .16 
D) .21

Question 6

A double-sampling plan has n1 = 50,n2 = 100,c1 = 2,and c2 = 4.Suppose on the first sample,five defectives were discovered.How many total items will be inspected before a decision is reached?

Accepted Answer

A) 50 
B) 100 
C) 150 
D) This cannot be determined with the information provided. 
A) 50 
B) 100 
C) 150 
D) This cannot be determined with the information provided.

Question 7

A quality manager has established a sampling plan that calls for a sample size of 75 units from a shipment of 5000 pieces and an acceptance number of 2.The supplier has agreed to a contract that calls for an AQL of 0.02 and an LTPD of .04.What is the AOQ if the actual percentage of defectives in the lot is 2%? Table G.1 is appended to this exam.

Accepted Answer

A) less than 0.014 
B) between 0.014 and 0.018 
C) between 0.018 and 0.022 
D) greater than 0.022 
A) less than 0.014 
B) between 0.014 and 0.018 
C) between 0.018 and 0.022 
D) greater than 0.022

Question 8

A single-sampling plan by attributes is needed for a purchased component.Table G.1 is appended to this exam.
Sample size = 80
Acceptance number (c)= 1
Acceptance quality level (AQL)= 0.02
Lot tolerance proportion defective (LTPD)= 0.06
Given the preceding information draw the AOQ curve and determine the AOQL.

Accepted Answer

The AOQL i

Question 9

If you were interested in minimizing the average number of items inspected,which type of sampling plan would you choose? Why?

Accepted Answer

The sequential sampling plan m

Question 10

A quality manager has established a sampling plan that calls for a sample size of 75 units and an acceptance number of 2.The supplier has agreed to a contract that calls for an AQL of 0.02 and an LTPD of .04.What is the AOQL? Table G.1 is appended to this exam.

Accepted Answer

A) less than 0.11 
B) between 0.11 and 0.14 
C) between 0.14 and 0.17 
D) greater than 0.17 
A) less than 0.11 
B) between 0.11 and 0.14 
C) between 0.14 and 0.17 
D) greater than 0.17

Question 11

A sample of 100 items is randomly selected from a shipment of incoming materials.AQL and LTPD have been established at 0.01 and 0.07,respectively.When four or more defective items are found in a sample,the shipment is rejected.What is the value of α? Table G.1 is appended to this exam.

Accepted Answer

A) less than or equal to 0.04 
B) greater than 0.04 but less than or equal to 0.06 
C) greater than 0.06 but less than or equal to 0.08 
D) greater than 0.08 
A) less than or equal to 0.04 
B) greater than 0.04 but less than or equal to 0.06 
C) greater than 0.06 but less than or equal to 0.08 
D) greater than 0.08

Question 12

An ideal OC curve is shaped like a ________.

Accepted Answer

The answer of An ideal OC curve is shaped like...

Question 13

Describe the process of a single-sampling plan.

Accepted Answer

The single-sampling plan is a decision r

Question 14

A(n)________ is when the consumer randomly selects items from the lot and inspects them one by one.

Accepted Answer

sequential

Question 15

The average outgoing quality (AOQ)is:

Accepted Answer

A) the average number of good units produced per hour. 
B) the expected proportion of defects a sampling plan will allow. 
C) the level of quality desired by the customer. 
D) the worst level of quality tolerated by the consumer. 
A) the average number of good units produced per hour. 
B) the expected proportion of defects a sampling plan will allow. 
C) the level of quality desired by the customer. 
D) the worst level of quality tolerated by the consumer.

Question 16

________ is an inspection procedure used to determine whether to accept or reject a specific quantity of material.

Accepted Answer

The answer of ________ is an inspection procedure used to...

Question 17

This OC curve represents a sampling plan developed for a lot size of 500,a sample size of 15,and an acceptance number of 2.The probability of acceptance for each of the first six points appears next to the plotted point.What is the average outgoing quality for an incoming fraction defective of 0.15?

Accepted Answer

A) less than 0.06 
B) greater than or equal to 0.06 but less than 0.07 
C) greater than or equal to 0.07 but less than 0.08 
D) greater than or equal to 0.08 
A) less than 0.06 
B) greater than or equal to 0.06 but less than 0.07 
C) greater than or equal to 0.07 but less than 0.08 
D) greater than or equal to 0.08

Question 18

A graph that demonstrates how well a sampling plan distinguishes between shipments that should be accepted and shipments that should be rejected is a(n)________.

Accepted Answer

The answer of A graph that demonstrates how well a...

Question 19

This OC curve represents a single sampling plan conducted on a lot size of 200 with a sample size of 20 and an acceptance number of 1.The y-coordinates of the first few points have been labeled;the x coordinates appear on the x-axis.If the receiving company uses rectified inspection,what is the greatest fraction defective that will enter their production process?

Accepted Answer

Average outgoing quality is calculated a

Question 20

In general,a sequential sampling strategy will require a lower number of items be inspected if the actual percentage of defectives in the lot is ________.

Accepted Answer

very low o

Exam 22: Acceptance Sampling Plans

For a given AQL and LTPD,which one of the following statements about the single-sampling plan is TRUE?

A double-sampling plan has n1 = 50,n2 = 100,c1 = 2,and c2 = 4.Suppose the first sample revealed two defectives.What should be done?

A single-sampling plan has n = 200 and c = 6.A sample is taken and five items are found to be defective.What should be done?

Which of the following is an example of a type II error?

A single-sampling plan by attributes is needed for a purchased component.Given the following information,what is the producer's risk? Table G.1 is appended to this exam. Sample size = 125 Acceptance number (c)= 4 Acceptance quality level (AQL )= 0.02 Lot tolerance proportion defective (LTPD)= 0.07

A double-sampling plan has n1 = 50,n2 = 100,c1 = 2,and c2 = 4.Suppose on the first sample,five defectives were discovered.How many total items will be inspected before a decision is reached?

If you were interested in minimizing the average number of items inspected,which type of sampling plan would you choose? Why?

A quality manager has established a sampling plan that calls for a sample size of 75 units and an acceptance number of 2.The supplier has agreed to a contract that calls for an AQL of 0.02 and an LTPD of .04.What is the AOQL? Table G.1 is appended to this exam.

A sample of 100 items is randomly selected from a shipment of incoming materials.AQL and LTPD have been established at 0.01 and 0.07,respectively.When four or more defective items are found in a sample,the shipment is rejected.What is the value of α? Table G.1 is appended to this exam.

An ideal OC curve is shaped like a ________.

Describe the process of a single-sampling plan.

A(n)________ is when the consumer randomly selects items from the lot and inspects them one by one.

The average outgoing quality (AOQ)is:

________ is an inspection procedure used to determine whether to accept or reject a specific quantity of material.

A graph that demonstrates how well a sampling plan distinguishes between shipments that should be accepted and shipments that should be rejected is a(n)________.

In general,a sequential sampling strategy will require a lower number of items be inspected if the actual percentage of defectives in the lot is ________.

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