For a particular component, X, Alpha has a lot tolerance percentage defective of

Question

For a particular component, X, Alpha has a lot tolerance percentage defective of 33 percent. Zenon Corporation, from which Alpha purchases this component, has an acceptable quality level in its production facility of 5 percent for component X. Alpha has a consumer's risk of 10 percent and Zenon has a producer's risk of 5 percent. Use Exhibit 13.10. a. When a shipment of Product X is received from Zenon Corporation, what sample size should the receiving department test? (Round up your answer to the next whole number.) Sample size b. What is the allowable number of defects in order to accept the shipment? Allowable number of defects

Explanation / Answer

a. When a shipment of Product X is received from Zenon Corporation, what sample size should the receiving department test? (Round up your answer to the next whole number.) Sample size

Solution :

Acceeptable Quality Limit = AQL = .03,

Lot Tolerance Percent Defective = LTPD = 0.10

LTPD/AQL = 0.10/0.03

                   = 3.333

=4

From Exhibit

C = 5.

Note: 3.333 is closest to 3.549 in the table for LTPD/AQL)

Also from this Exhibit,

n(AQL) = 2.613

= 3

b. What is the allowable number of defects in order to accept the shipment? Allowable number of defects

Solution :

Allow up to 5 defective components

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