Problem 1: a Supplier of a rechargeable battery, used in the production of a child toy, contracts to provide the Toy
Producer with batteries in lot quantities of N = 3000 units, where each lot subjected to the following Single sampling
plan: n = 80,c= 1. The supplier maintains an AQL (Acceptable Quality Level) Po = 1%, rejected lots are returned to the
Supplier for Remediation. The Producer considers lots of 4% non-conforming to be his QL (Quality Limit) Questions
1-
Draw the OC (Operating Characteristics) Curve using 7 points in the required range of interest.
2-
estimate the alpha nd beta
type errors for this inspection plan.
Answers
Answer:
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Explanation:
1.- A supplier of a rechargeable battery, used in the production of a child toy, contracts to provide the Toy Producer with batteries in lot quantities of N=3000 units, where each lot subjected to the following single sampling plan: n=80, c=1. The supplier maintains an AQL (Acceptable Quality Level) Po=1%, rejected lots are returned to the Supplier for remediation. The producer considers lots 4% non-conforming to be his QL (Quality Limit). Questions: Draw the OC (Operating Characteristics) Curve using 7 points in the required range of interest, and estimate the alpha and beta type errors for this inspection plan.
2.- After a year of experience under the plan describer in Problem 1, the supplier proposed that rejected lots be sorted and remedied at the Toy Producer plant, during toy assembling, for an offered cost reduction. Question: Estimate the expected Average Total Inspected (ATI) that the toy producer will face if the proposal is accepted.
3.- Using the OC curve data from Problem 1, establish and draw the AOQ (Average Outgoing Quality) curve for the inspection plan described in Problem 1 (use enough data points to show the curve accurately). Questions: Estimate the AOQ for the Quality Limit (QL), established by the producer 2. Determine the AOQL (Average Outgoing Quality Limit). Explain to lay a person the purpose of the AOQ curve and the assumption for the values of the AOQ estimates.