I am doing a research paper for Applied Research and Evaluation, MMPA-6480. I need to develop a sampling design for the non-profit organization I am researching. The organization I am researching is called Expect a Miracle. Expect a Miracle helps people on drugs or alcohol become disciples. This program is for men and women. I am having problems with which sampling design to use. I feel that random sampling or cluster sampling would be the way to go. However, I am not 100 percent. Could you please help me understand the difference in a nutshell? Thank you.