Question

Abc company produces mugs in lots of 10,000. Quality contracts require producers risk of 0.05 with an aql of 1% defective and a consumers risk of 0.10 with a ltpd of 5% defective. What size sample and what acceptance number should abc use to achieve performance measures called for in the sampling plan?

Answer 1

Explanation:

Average Outgoing Quality (AOQ) Expected number of defective items that will pass on to customer with a sampling plan

Average outgoing quality limit (AOQL) maximum point on the curve worst level of outgoing quality

Double-Sampling Plans Take small initial sample

If # defective ≤ lower limit, accept

If # defective > upper limit, reject

If # defective between limits, take second sample Accept or reject based on 2 samples Less costly than single-sampling plans

Multiple-Sampling Plans Uses smaller sample sizes

Take initial sample

If # defective ≤ lower limit, accept

If # defective > upper limit, reject

If # defective between limits, resample Continue sampling until accept or reject lot based on all sample data