A lot is accepted if none are defective. So the probability isOriginally Posted by andy_atw
I have been away from math for a while. I appreciate the help here tremendously.
the problem: In manufacturing, a sample of 4 items from a lot of 100 is taken.
The lot is rejected if at least 1 is defective.
Graph the probability that the lot is accepted as a function of the percentage of defective items in the lot.
I included an attachment that tries to explain my thought process on the attached problem. I am completely stuck like chuck on the graph also.
If the attachment doesn't work I saved it to a link also.
thanks in advance.
Andy
http://www.orbitfiles.com/download/id791674014
Arghh, you're right. Sorry about that. I used a sample with replacement. This should be a sample without replacement.Originally Posted by andy_atw
So using the hypergeometric distribution the probability of no defectives is This is the number of ways of choosing 4 out of 100-k nondefectives over the number of ways of choosing 4 out of 100.