Let's say I have a manufacturing plant. I design and manufacture 1000 units of a product - no flaws in any of the 1000. I then use the same equipment, operators, materials from the same batch the test was done with and produce 100000 of the product. I find I have 50 that are flawed. What is the mathematical formula that will tell me how 'representative' my sample of 1000 products was? How probable is it that the flaw would not show up in 1000 units when 50 show up in 100000 units?
Thanks in advance for any help/time.
Thanks in advance for any help/time.