Exam 24: Supplement G Acceptance Sampling Plans

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 = 75 Acceptance number (c) = 2 Acceptance quality level (AQL) = 0.01 Lot tolerance proportion defective (LTPD) = 0.04

Which one of the following will increase the consumer's risk?

The AOQ is often lower for a supplier with a high fraction defective than for a supplier with a comparatively lower fraction defective. Why wouldn't a supplier with a lower fraction defective always have a better AOQ?

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 limit?

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) ________.

________ is the risk that a lot with LTPD will be accepted-a type II error.

A double-sampling plan is usually less expensive than a single-sampling plan if the lot has a low number of defectives.

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

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

An ideal OC curve is shaped like a ________.

A single-sampling plan by attributes is needed for a purchased component. Table G.1 is appended to this exam. Sample size = 100 Acceptance number (c) = 2 Acceptance quality level (AQL) = 0.01 Lot tolerance proportion defective (LTPD) = 0.04 Given the preceding information:

The maximum value of the average outgoing quality over all possible values of the proportion defective is called the ________.

If the sample size is increased and the acceptance level is unchanged, the OC curve will have a higher consumer's risk.

An item is purchased with one surface polished to a specified finish quality. From each incoming shipment, a sample of items is randomly selected and the polished surface of each sample item is compared with a standard and judged to be either acceptable or unacceptable. The following parameters have been established: AQL = 0.02, = 0.05, LTPD = 0.09, and = 0.10. Table G.1 is appended to this exam. What are the sample size and the acceptance number?

Increasing c while holding n constant decreases the ________ risk and increases the ________ risk.

A double-sampling plan has a lower ________ than a single-sampling plan.

A single-sampling plan using a sample size of 50 on a lot size of 2,000 has the following performance: Today the company making the purchase receives two lots of 2,000 items and the inspection department is in a big hurry. Which action will result in an identical AOQL for the purchasing company?

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.

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?

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