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