Question

Question 2 (3 points) A batch of one million washers arrived. Using general inspection level II, what sample size is required under AQL = 1.0% ? 80 1250 800 59

Answer 1

As per the sampling and acceptance limits table below, for AQL%= 1% and general inspection II we would need sample size of 1250

Correct answer is "1250"

For lot size of million washers and general inspection level II , the code "Q" is defined as per sample size code.

Table 1 Sample Size Code Letters Q General Inspection Levels Special Inspection Levels II S-1 S-2 S-3 S-4 A A A B B С A A A A A A А A A B с A B B D E 26 с D А B B C С E B B С С D F B B С Lot size (Number of ordered products) 2 8 9 15 16 25 50 51 90 91 150 151 280 281 500 501 → 1200 1 201 → 3200 3 201 = 10 000 10 001 35 000 35001 → 150 000 150 001 500 000 500 001 10000000 D D E F G G H F G H J K L M с с B B с С D E E E F С J K H E G J L С D D D F G K M С F H D N P Q E G L M J N Р D E E G H J K N Q R D

Now for 1% AQL and code Q, the sample size required is 1250 as per below sampling and acceptance limits table.

Table 2 Sampling & Acceptance Limits Acceptance Quality Limits (AQL) in % NUMBER OF SAMPLES 0.015 0.025 0.040 0.065 0.10 0.15 0.25 0.40 0.65 1.0 265 10 15 25 40 6.5 10 15 25 A 01 12 N M B A → 12 2 3 С 5 01 12 23 34 D 8 01 12 E 13 01 23 3 F 20 01 23 34 56 112 56 78 1 1 2 2 3 34 5 6 7 8 10 11 1 12 23 34 5 6 7 8 10 11 14 15 3 4 5 6 7 8 10 12 14 15 21 22 56 78 10 12 14 15 21 22 G 32 01 H 50 01 12 2 80 01 12 23 K 125 01 1 2 23 L 200 01 M 315 01 1 2 23 N 500 34 56 78 10 11 14 15 21 22 12 23 3 4 5 6 7 8 10 12 14 15 21 22 34 5 6 7 8 10 12 14 15 21 22 1 12 23 34 56 78 10 11 14 15 21 22 1 1 2 2 3 34 5 6 7 8 10 12 14 15 21 22 12 2 3 3 4 5 6 7 8 10 1 14 15 21 22 23 34 56 78 10 14 15 2122 1 01 P 0 1 800 1250 R 2000 1 2 Acceptance ® Rejection

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