1. Average number of pieces inspected is double that of single sampling. |
2. Average number of pieces inspected is less than that for single sampling |
3. Decision to accept or reject the lot is taken only after the inspection of both samples |
4. Decision to accept or reject the lot is reached sometime after one sample and sometimes after two samples. |
A) 1, 2 and 3
B) 2 and 4
C) 1 and 4
D) 2 and 3
Correct Answer: D
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