Exam 19: Operational Decision-Making Tools: Acceptance Sampling
A multiple-sampling plan uses the smallest sample size of any sampling plan.
True
.Is acceptance sampling consistent with TQM?
Acceptance sampling is a historical approach to quality control based on the premise that some acceptable number of defective items will result from the production process.The producer and consumer agree on the number of acceptable defects.The notion of a producer or consumer agreeing to any defects is contrary to the philosophy of TQM.The goal of companies that have adopted TQM is to achieve zero defects.Acceptance sampling identifies defective items after the product is already finished,whereas TQM strives to prevent defects altogether.TQM companies do not believe that acceptance sampling is helpful in preventing poor quality or in ensuring good quality in the future.
What is the advantage of a multiple-sampling plan?
A multiple-sampling plan also referred to as a sequential sampling plan,generally employs the smallest sample size of many of the sampling plans used in acceptance sampling.In its most extreme form,individual items are inspected sequentially,and the decision to accept or reject a lot is based on the cumulative number of defective items.A multiple-sampling plan can result in small samples and,consequently,can be the least expensive of the sampling plans.
With acceptance sampling,a lot is either rejected or accepted depending on the number of defects found in a sample.
The consumer's risk is the probability of rejecting a lot that meets the acceptable quality level (AQL).
A lot is rejected if the number of defective units found in a random sample exceeds a predetermined acceptable number of defective units.
The expected number of defective items that will pass on to the customer with a sampling plan is known as the
An operating characteristic (OC)curve is a graph that measures
The consumer's risk is the probability of accepting a lot in which the fraction of defective items exceeds the lot tolerance percent defective (LTPD).
Double-sampling plans are often less costly than single-sampling plans.
The _________________ is the maximum number of defective items a customer will accept in a lot.
A multiple-sampling plan uses the smallest sample size of any sampling plan.
Acceptance sampling is consistent with TQM's philosophy of zero defects.
Acceptance sampling is still used today for all the following reasons except
With a single-sample attribute plan only one of the items randomly sampled from a lot is inspected.
The probability of rejecting a lot that has an acceptable quality level is referred to as the
A(n)________________ curve is a graph showing the probability of accepting a lot for different quality levels with a specific sampling plan.
The consumer's willingness to accept lots with a small proportion of defective items is known as the acceptable
A sampling plan provides a set of guidelines for accepting a lot.
Acceptance sampling is based on the premise that a lot contains some acceptable number of defective items.
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