Question: Suppose that 50 units are tested for 1 000 cycles of
Suppose that 50 units are tested for 1,000 cycles of use. At the end of the 1,000-cycle test period, 5 of units have failed. When a unit failed, it was replaced with a new one and the test was continued. Estimate the failure rate.
Answer to relevant QuestionsExplain why it is necessary to consider variability around the mean or nominal dimension as a measure of quality. What is meant by the cost of quality? Why are designed experiments most useful in the improve step of DMAIC? Suppose that 50 units are placed on test, and when 3 of them have failed, the test is terminated. The failure times in hours for the 3 units that failed are 950, 1050, and 1525. Estimate the failure rate for these units. An electronic component has an exponential time to failure distribution with hours. What are the mean and variance of the time to failure? What is the reliability at 7,000 hours?
Post your question