SOLUTION: (Please enter your answers as fractions in lowest terms or as decimals rounded to four decimal places. Thank you!) If an assembly has been tested 300 hours without a fai

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Question 1131711: (Please enter your answers as fractions in lowest terms or as decimals rounded to four decimal places. Thank you!)




If an assembly has been tested 300 hours without a failure, what is the probability of a failure in the next 64 hours? The lifetime of a mechanical assembly in a vibration test is exponentially distributed with mean of 404 hours.

Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
Probability of failure in next 64 hours = e^(-64/404) = 0.8535
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Note the exponential distribution is memoryless, that is, it does not matter how long the assembly has been running without a failure
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