a) Twenty-five parts are tested for 15 hours. At the end of the test, 3 parts...

  

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a) Twenty-five parts are tested for 15 hours. At the end of the test, 3 parts had failed at 2, 5, and 6 hours. What is the failure rate? b) Determine the reliability at t-80 h for the example problem where 0-125 and there is a constant failure rate. What is the reliability at t=125 h? at t=160 h? c) Suppose all the components in the figure below are identical and assumed to have reliability p. Find the reliability of the system if component 7 is keystone. 4 1 5 7 2. 3. a) Twenty-five parts are tested for 15 hours. At the end of the test, 3 parts had failed at 2, 5, and 6 hours. What is the failure rate? b) Determine the reliability at t-80 h for the example problem where 0-125 and there is a constant failure rate. What is the reliability at t=125 h? at t=160 h? c) Suppose all the components in the figure below are identical and assumed to have reliability p. Find the reliability of the system if component 7 is keystone. 4 1 5 7 2. 3.

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