Document ID: chunk:federal_register_of_legislation:F2023L00129:reg:13:p27
Version: federal_register_of_legislation:F2023L00129
Segment Type: reg
Provision Reference: reg 13 (pt 27/27)
Character Range: 712379–713541

per cent of the vehicles or engines defective is 0.10 (consumer's risk = 10 per cent).
              3.1.2. The test statistic quantifying the cumulative number of nonconforming tests at the n‑th test shall be determined for the sample.
              3.1.3. The pass or fail decision of the lot shall be made according to the following requirements:
(a) If the test statistic is less than or equal to the pass decision number for the sample size given in Table 1, a pass decision is reached for the lot;
(b) If the test statistic is greater than or equal to the fail decision number for the sample size given in Table 1, a fail decision is reached for the lot;
(c) Otherwise, an additional engine is tested according to this annex and the calculation procedure is applied to the sample increased by one more unit.
              In Table 1 the pass and fail decision numbers are calculated by means of the International Standard ISO 8422/1991.
              Table 1
              Pass and fail decision numbers of the sampling plan
              Minimum sample size: 3
Cumulative number of engines tested   Pass decision number  Fail decision number
(sample size)