Question: 4. A rocket is guided by a computer that has three main components: Display, Power Supply and the CPU. All these components must function simultaneously

4. A rocket is guided by a computer that has three main components: Display, Power Supply and the CPU. All these components must function simultaneously for the computer to function. The reliability of first two components is 0.95 and 0.98 while the reliability of the third is.99. The failure of this computer will be catastrophic since it will mean failure of the launch. NASA is contemplating adding an identical back-up computer to the present system to improve overall reliability. Then, in case of a failure of the main computer, the operations will automatically switch to the second (i.e. backup) computer avoiding any loss of continuity. a) What is the reliability of the present system? b) What will be the reliability of the proposed system with the back-up computer installed? (20 Pts)

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