The hard drive manufacturer is actively striving to enhance the longevity of its hard drive products through the implementation of three innovative production technologies: A, B, and C. To thoroughly assess the impact of these cutting-edge technologies on the lifespan of hard drives, a 23 experiment is run, and the data from two replicates are shown in the following table (in weeks). (=0.01). (a) Do any of the three technologies have an impact hard drive's lifetime? (b) Will the combination of technologies A and C always gives good results regardless of applying technology B? Ameans the technology A is not applied and A+means technology A is applied