Deck 5: Supplement Operational Decision-Making Tools: Acceptance Sampling

Question 1

The fundamental interpretation of an AOQ curve is that

A)all defects can be detected if beta is small enough
B)the worse the lot being tested,the more likely it is to fail inspection
C)it is unwise to expect acceptance sampling to remove all defects
D)the best AOQ rates are for very good lots and for very bad lots;the worst AOQ rates are for lots with "in-between" quality

Answer 1

D

Question 2

A multiple-sampling plan is used instead of single- and double- sampling plans because

A)it insures the highest level of quality
B)it requires the largest sample sizes
C)It requires the smallest sample sizes
D)It has the highest probability of detecting a bad lot

Answer 2

C

Question 3

The inputs to determining a sampling plan are

A)alpha and beta,n and p
B)alpha,beta,producer's risk and consumer's risk
C)alpha,beta,AQL,and LTPD.
D)lot size,sample size,AQL and LTPD

Answer 3

C

Question 4

The output of a sampling plan is

A)lot size and actual number of defects in a sample
B)sample size and acceptable number of defects in a sample
C)acceptance quality level and lot tolerance percent defective
D)consumer's risk and producer's risk

Question 5

AOQL is

A)the Absolute Overall Quality Limit
B)the Absolute Outgoing Quality Level
C)the Average Outgoing Quality Limit
D)the Average Outgoing Quantity Level

Question 6

An operating characteristics curve

A)shows the probability of accepting a lot with various percent defectives
B)considers that defective items are replaced with good items
C)is used for double sampling
D)can be developed separately from a sampling plan

Question 7

The probability of accepting a bad lot is known as

A)Type I error
B)Type II error
C)acceptable quality level
D)producer's risk

Question 8

Setting alpha equal to 5 percent

A)means that five percent of all items are defective
B)means that five percent of all samples will fail testing
C)is required by OM Tools
D)means that when a batch is better than AQL,there is a five percent chance it will fail testing

Question 9

A double-sampling plan is used instead of a single-sampling plan in order to

A)verify the results of a single-sampling plan
B)allow fewer defective items to be accepted
C)provide a higher level of quality than a single-sampling plan
D)save costs

Question 10

AOQ is at its worst level when

A)the product is especially poor in quality
B)AQL equals LTPD
C)the sample size n is small
D)product is neither exceptionally good nor exceptionally poor in quality