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Sampling Plans. Three types of Sampling Plans Sampling Inspection by attributes MIL-STD-105E (ANSI/ASQC Z1.4 – 1981) Sampling Inspection by variables MIL-STD-414 (ANSI/ASQC Z1.9 – 1980) Dodge-Roming. MIL-STD-105E. Single sampling plans for Normal Inspection. MIL-STD-105E.

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## Sampling Plans

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**Three types of Sampling Plans**• Sampling Inspection by attributes • MIL-STD-105E (ANSI/ASQC Z1.4 – 1981) • Sampling Inspection by variables • MIL-STD-414 (ANSI/ASQC Z1.9 – 1980) • Dodge-Roming**Single sampling plans for Normal Inspection**MIL-STD-105E**Single sampling plans for Tighten Inspection**MIL-STD-105E**Single sampling plans for Reduced Inspection**MIL-STD-105E**Given**Sampling Plan Single Inspection Level II Lot size 4500 AQL 1% Sampling Condition Normal; Tightened; Reduced There are 15 lots ( for a lot of 4500 products) to be inspected, the number of defectives is 3,4,2,5,2,3,5,4,3,1,3,6,7,3,2. Will the lots be accepted or rejected?**Given**Sampling Plan Single Inspection Level III Lot size 50000 AQL 1.5% Sampling Condition Normal; Tightened; Reduced There are 15 lots ( for a lot of 50000 products) for inspection, the number of defectives is 13,20,21,22,23,23,23,25,13,21,23,22,17,14,12. Will the lots be accepted or rejected?**MIL-STD-414(Single Specification Limit – Form1)**• AQL • Code Letter • Sample size n • k Value (acceptability constant) • For QL = x – L or Qu = U – x ≧k • For QL = x – L or Qu = U – x ＜k Accept S S Reject S S**Given a lot of 5000 hygrister. Normal inspection (Level II)**is to be used (MIL-STD-414, Single Specification Limit Form 1) with AQL=0.65%. Please determine how many units from the lot should be inspected? • For the mean of the sampling is 9.90 ohmage with standard deviation of 0.25 ohmage. The lower specification is 10-0.5 ohmage. Will this lot be accepted or not? • For the mean of the sampling is 10.2 ohmage with standard deviation of 0.20 ohmage. The lower specification is 10-0.5 ohmage. Will the lot be accepted or not?**Given a lot of 52000 hygrister. Normal inspection (Level II)**is to be used (MIL-STD-414, Single Specification Limit Form 1) with AQL=1.0%. Please determine how many units from the lot should be inspected? • For the mean of the sampling is 5.0 ohmage with standard deviation of 0.10 ohmage. The upper specification is 5+0.5 ohmage. Will this lot be accepted or not? • For the mean of the sampling is 5.3 ohmage with standard deviation of 0.40 ohmage. The lower specification is 5-0.4 ohmage. Will the lot be accepted or not?**MIL-STD-414(Single Specification Limit – Form2)**• AQL • Code Letter • Sample size n • M Value • For PL or Pu ≦M Accepted • For PL or Pu ＞M Rejected**Single Specification Form 2 or Double Specification**MIL-STD-414

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