The Challenge

July 29, 2009 | Leave a Comment

Businesses today are having to ask themselves many questions in order to survive the economic downturn: * How do you compete in this environment? * What does it take to obtain business from an existing or prospective customer? You can say that if you knew the answer to that, you wouldn’t be struggling as hard [...]

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Chi Squared Distribution for RDT

July 23, 2009 | Leave a Comment

Chi Squared Distribution for Reliability Demonstration Testing When planning a Reliability Demonstration Test (RDT), your objective is to demonstrate a certain reliability (or MTBF) at a certain Confidence Level (CL). If you want to determine what MTBF at a particular CL you have demonstrated, if you tested T number of hours, you would use the [...]