Design of Experiments (DOE), developed by R.A. Fisher in England is a test or series of tests that enables the experimenter to compare two or more methods to determine which is better, or determine levels of controllable factors to optimize the yield of a process or minimize the variation of a response variable. Research the Internet or other appropriate sources and find and discuss two specific examples of how the DOE process was used to accomplish the purpose of DOE. Cite your sources.