quality control assurance subject question plz suggest me solution of attached question.

If you were interested in protection for acceptance of a single lot from a vendor with whom you do not expect to conduct much business, what criteria would you select, and why? The length of connector pins has an upper specification limit of 45mm and a lower specification limit of 40mm. It is desirable that lots with a mean such that 8% of the product is nonconforming, either above the upper specification limit or below the lower specification limit, be accepted 6% of the time. We wish to accept lots with a mean of 42.5mm with a probability of 0.94 . The distribution of the length of the connector pin is normal, with a standard deviation of 0.8mm. Find the parameters of a variable sampling plan and describe its operation. 2+4 Marks