The life (in years) of a certain machine is a random variable with probability density function defined
Question:
The life (in years) of a certain machine is a random variable with probability density function defined by
(a) Find the mean life of this machine.
(b) Find the standard deviation of the distribution.
(c) Find the probability that a particular machine of this kind will last longer than the mean number of years.
Transcribed Image Text:
3 f(t) - + (₁ + ²/1 ) = 1 11 for t in [4, 9].
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