Describe the process of a double-sampling plan

What will be an ideal response?


In a double-sampling plan, management specifies two sample sizes (n1 and n2 ume) and two acceptance numbers (c1 and c2). If the quality of the lot is very good or very bad, the consumer can make a decision to accept or reject the lot on the basis of the first sample, which is smaller than in the single-sampling plan. To use the plan, the consumer takes a random sample of size n1. If the number of defects is less than or equal to (c1), the consumer accepts the lot. If the number of defects is greater than (c2), the consr rejects the lot. If the number of defects is between c1 and c2, the consumer takes a second sample of size n2. If the combined number of defects in the two samples is less than or equal to c2, the consumer accepts the lot. Otherwise, it is rejected. A double-sampling plan can significantly reduce the costs of inspection relative to a single-sampling plan for lots with a very low or very high proportion defective because a decision can be made after taking the first sample. However, if the decision requires two samples, the sampling costs can be greater than those for the single-sampling plan.

Business

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