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Design of Experiments Guide > Prospective Sample Size and Power > Reliability Demonstration Calculator
Publication date: 11/10/2021

Reliability Demonstration Calculator

Use the Reliability Demonstration calculator to test a specified number of units for a specified period of time. If fewer than k units fail, the demonstration passes, and you can conclude that the product reliability meets or exceeds a reliability standard. We pose the reliability demonstration as a hypothesis test:

Equation shown here

where p is the probability of survival time at t* for the new product and p* is the standard probability of survival at time t*.

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