As the Head of the purchasing department at the ABC company, you would like to have a single sampling plan to determine the disposition of incoming materials. You will not accept, more than 10% of the time, material that is 6.5% defective or worse. You would accept, more than 95% of the time, material that is 1 % defective or less.
1. What is the consumer's risk involved in such a sampling plan?
(a) 190 6.
(b) 5%
(c) 6.5%
(d) 10%
(e) 95%
2. Based on Grubb's Table, what would be the acceptance level (c) of this sampling plan?
(a) 0 7.
(b) 1
(c) 2
(d) 3
(e) 4 8.
3. If the producer's risk (α) is fixed at 5%, what would be the sample size?
(a) 36
(b) 53
(c) 71
(d) 82 9
(e) 137 .
4. If the consumer's risk (B) is fixed at 10 (c) 71 yo, what would be the sample size?
(a) 36
(b) 53
(c) 71
(d) 82
(e) 137
5. Assume that the lot fraction defective (p) is known as 5%, what's the difference between a rejected lot and a accepted lot?
(a) The accepted lot has a better quality.
(b) The rejected lot has more defective items.
(c) The lot fraction defective of the accepted lot is less than 5%.
(d) can't tell, need more information