Haven is preparing to launch the Haven Haptic, a handheld device built by Haven and optimized for Haven games. 0.4% of the Haven Haptics have a bug that makes them short-circuit after 10 hours of use. The QA director created a quick test for the defect-however, it misses the defect 3% of the time. She wants to know the chance that a device has this defect after testing positively for it. You tell her that if she also knows -to help her out. you can use the joint probability of a device being defective and short-circuiting the test's false positive rate