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The time (in hours) required to repair a machine is an exponential distributed random variable with paramter = 1 2 . What is Let X denote the time...

The time (in hours) required to repair a machine is an exponential distributed random variable
with paramter  = 1
2 . What is
Let X denote the time (in hours) required to repair a machine. X  Exp
ô€€€1
2

. The PDF for
the exponential distribution is
f(x) = eô€€€x
(a) the probability that a repair time exceeds 2 hours;

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