The duration of telephone calls in certain city is measured by a random variable X with probability
Question: The duration of telephone calls in certain city is measured by a random variable \(X\) with probability density
\[f(x)=0.5{{e}^{-0.5x}}\]where \(x\) denotes the duration in minutes of a randomly selected call
(a) What percentage of the calls can be expected to last between 2 and 3 minutes?
(b) What percentage of the calls can be expected to last 2 minutes or less?
(c) What percentage of the calls can be expected to last more than 2 minutes
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Deliverable: Word Document
Deliverable: Word Document