The guidance system of an Iraq-era Warship has three modules that must function properly for the system to work.
The first two modules have a reliability of .93, the other has a reliability of .97. A defense contractor is offering a replacement guidance system for the same ship which consists of five modules, the first two having a reliability of 97, and the last two a reliability of .99.
Calculate the percent improvement in reliability by replacing the old system with the new one.