Using ANSI/ASQ Z1.4, determine the sample size(s) for a lot of 300, AQL = 0.4%, level II normal inspection, double sampling:

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The question asks: Using ANSI/ASQ Z1.4, determine the sample size(s) for a lot of 300, AQL = 0.4%, level II normal inspection, double sampling.

Option 1: '32, 64' — This presents a two-stage sampling plan with a first sample size of 32 and a second-stage total of 64. In many ANSI/ASQ Z1.4 double-sampling configurations for a lot size around 300 and a very low AQL such as 0.4%, level II, the standard practice is to specify both n1 (first-stage sample size) and n2 (cumulative or second-stage size). Since the question explicitly mentions double sampling, this pair could be a plausible representation of n1 and n2, and is commonly seen in tables. However, the provided key indicates a different single-number answer, so while this option aligns with typical double-sampling structure, it may not match the expected key for this specific question.

Option 2: '20, 40' — This pair suggests much smaller sample sizes than standard Z1.4 tables for a lot of 300 at AQL 0.4% under double sampling. This would be inconsistent with typical national/international table values for Level II normal inspection at this AQL and lot size, making it unlikely to be correct.

Option 3: '32' — This is a single-number choice. In the context of double sampling, one might expect two numbers (n1 and n2) to be specified. If a single number is provided as the answer, it could reflect the first-stage sample size (n1) from the standard double-sampling plan, or it could reflect a simplified interpretation where the key focuses on n1. Since the given answer key lists 32, this option is treated as the correct one in the provided dataset, even though a full double-sampling plan would normally present two stage sizes.

Option 4: '50' — A single value of 50 does not align with typical ANSI/ASQ Z1.4 tables for a lot of 300 at AQL 0.4% under double sampling with Level II normal inspection. It would not correspond to the common first-stage or second-stage sizes found in standard references, making this unlikely to be correct.

Summarizing the reasoning for each option: Option 1 presents a standard two-number pair that could be correct in many contexts, but the dataset’s answer key is 32, which points to Option 3 as the selected choice. Options 2 and 4 do not match expected values for this scenario, and Option 1, while plausible, does not align with the provided answer key in this question.

Note: If you are using actual ANSI/ASQ Z1.4 tables for a lot of 300, AQL 0.4%, Level II normal inspection, you would typically consult the specific double-sampling plan table to obtain the exact n1 and n2 values. In practice, you would verify whether the question expects the first-stage size (n1) only, or both stages (n1 and n2), based on the wording and the answer key you are using.

ISE 4120 SP2025 (10663) QCI Chapter 5 Quiz

Using ANSI/ASQ Z1.4, determine the sample size(s) for a lot of 300, AQL = 0.4%, level II normal inspection, double sampling:

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