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Find the mean of a random variable X, wh...

Find the mean of a random variable X, whose probability density function is `f(x)={{:(lambdae^(-lambdax), "for " x ge 0), (0, "otherwise"):}`.

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The correct Answer is:
`1/lambda`
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SURA PUBLICATION-PROBABILITY DISTRIBUTIONS-GOVERNMENT EXAM QUESTIONS - 2 MARK
  1. Find the mean of a random variable X, whose probability density functi...

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