Question 1

Which of the following is an advantage of sampling?&#10;A) risk of accepting bad lots&#10;B) risk of accepting good lots&#10;C) less handling damage during inspection&#10;D) risk of rejecting bad lots

Accepted Answer

Sampling reduces the amount of handling required during inspection and can also be less time-consuming and less expensive than inspecting every item in a population. Options A and D are disadvantages of sampling as there is always a risk of accepting bad lots and rejecting good ones.

Question 2

One of the reasons for using double sampling rather than single sampling is:&#10;A) more information&#10;B) reduced inspection&#10;C)easier to find the process average &#10;D) all of the above

Accepted Answer

Double sampling can reduce inspection costs by allowing a decision to be made after a smaller initial sample, potentially avoiding the need to inspect the entire lot.

Question 3

Which of the following is not a valid method of sample selection?&#10;A) stratification&#10;B) random number&#10;C) first come first serve&#10;D) without bias

Accepted Answer

First come first serve is not a valid method of sample selection as it may introduce bias towards those who are able to respond or participate first, and may not be representative of the entire population. Stratification, random number, and without bias are all valid methods that aim to ensure the sample is representative and avoids bias.

Question 4

Which of the following types of sampling would be selected for its lower administrative costs:&#10;A) single&#10;B) multiple&#10;C) double&#10;D) all of the above

Accepted Answer

Single sampling involves selecting only one unit from the population which makes it the simplest and most cost-effective sampling method. Multiple and double sampling involve selecting more than one unit from the population, which increases administrative costs. Therefore, single sampling would be the best choice for lower administrative costs.

Question 5

Determine the OC Curve for N = 2000, n = 50, c = 3.&#10;

Accepted Answer

The answer of Determine the OC Curve for N =...

Question 6

The abbreviation AOQL stands for:&#10;A) Acceptable Optimum Quality Level&#10;B) Average Optimum Quality Loc&#10;C) Average Outgoing Quality Limit&#10;D) none of the above&#10;D) Acceptable Outgoing Quality Limit c returned to the consumer

Accepted Answer

AOQL stands for Average Outgoing Quality Limit which is a statistical tool used to monitor the quality of a product or service during the production process. It is the average of all outgoing quality limits for a given lot or batch.

Question 7

The Producer's risk is the risk:&#10;A) of accepting lots of good quality&#10;B) of rejecting lots of bad quality&#10;C) of accepting lots of bad quality&#10;D) of rejecting lots of good quality

Accepted Answer

The Producer's risk is the risk of rejecting lots of good quality. This means that a producer may reject a lot that is actually of good quality, thus leading to lost profits and potential damage to the producer's reputation. Therefore, the best choice is D, as it correctly identifies the risk of rejecting lots of good quality.

Question 8

In the formation of lots, a lot should be:&#10;A) suitable for materials handling&#10;B) conformed to good packaging principles&#10;C) homogeneous&#10;D) none of the above

Accepted Answer

A lot should be homogeneous, meaning that the items or materials within the lot are uniform or consistent in terms of characteristics such as size, shape, quality, and quantity. This allows for easier inspection, monitoring, and quality control. While being suitable for materials handling and conforming to good packaging principles are also important considerations, they are not specific requirements for the formation of lots.

Question 9

OC curves that drop sharply at the top are characterized by:&#10;A) advantageous to the consumer&#10;B) advantageous to the producer&#10;C) acceptance numbers of zero&#10;D) require double sampling

Accepted Answer

OC curves that drop sharply at the top typically indicate acceptance numbers of zero, meaning that the acceptance criteria are very strict and even a single defect leads to rejection of the lot.

Question 10

Which of the following sampling types has the smallest ASN value when the quality is very good:&#10;A) single&#10;B) double&#10;C) multiple&#10;D) tightened 108

Accepted Answer

Multiple sampling plans generally have the smallest Average Sample Number (ASN) when the quality is very good, as they allow for early termination of sampling if the lot is clearly acceptable.

Question 11

The AQL is given:&#10;A) in lieu of the LQL&#10;B) as the number of nonconformities&#10;C) as a fraction&#10;D) in percent

Accepted Answer

The answer of The AQL is given:&#10;A) in lieu of...

Question 12

The largest value of the average outgoing quality curve is called:&#10;A) AOQ&#10;B) best condition&#10;C) worst condition&#10;D) AOQL

Accepted Answer

The answer of The largest value of the average outgoing...

Question 13

The curve which shows the amount inspected by both the producer and the consumer is called?&#10;A) AOQ&#10;B) ASN&#10;C) ATI&#10;D) AQL

Accepted Answer

The answer of The curve which shows the amount inspected...

Question 14

It is desired to have a single sampling plan where the risk of rejecting a 1.0%&#10;nonconforming lot is 0.05. Determine the sample size for an acceptance number of 3.

Accepted Answer

The answer of It is desired to have a single...

Question 15

Determine the AOQ curve for N = 2000, n = 50, c = 0. Also, determine the AOQL and locate it on the curve. Ordered pairs from the OC curve are (0.5%, 0.778), (1.0%,0.607), (2.0%, 0.368), (3.0%, 0.223), (6.0%, 0.050).

Accepted Answer

The answer of Determine the AOQ curve for N =...

Question 16

When sampling, the most important consideration is:&#10;A) the population is normal&#10;B) the assignment of serial numbers&#10;C) the sample is representative of the population&#10;D) random number table

Accepted Answer

The answer of When sampling, the most important consideration is:&#10;A)...

Deck 10: Acceptance Sampling