Re: Tom Ryan's reply to the SPC theory point

[GrantBlair@aol.com]

In a message dated 9/11/2001 2:23:58 AM Eastern Daylight Time, 
RDeRoeck@alphaind.com writes:

<< Sampling Plan-1 uses n=13,c=0
 Sampling Plan-2 uses n=50,c=1
 Sampling Plan-2 uses n=80,c=2
 
 Let's say the supplier's quality level (p) for this lot is 0.05 defective >>

I'm reminded of the "urban legend" about a customer who specifed a quality 
level of 3 defects per thousand in his contract. When he received his first 
shipment of 1000 parts, it included 3 parts in a separate bag, along with an 
apologetic letter from his Japanese supplier explaining that, although he 
didn't understand the strange request, the required number of defects were 
produced, and included, as requested.
Sorry Rich, but the most important number is C. If C ain't 0, nothing else 
matters, even if you sample 100% of the
product, which is was the original condition given in my example. In my 
example, we made a product which met customer requirements. The example you 
give would not.

GrantBlair@aol.com
Ninety Six SC