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Let X = amount of time for which a b...

Let X = amount of time for which a book is taken out of a collage library by a randomly selected student and suppose X has p.d.f.
`f(x) ={{:(, 0.5 x, 0 le x le 2),(,0, "otherwise"):}`
Calculate (1) `P(X le 1) ` (2) `P(0.5 le X le 1.5)`

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The correct Answer is:
(1) `(1)/(4)` (2) `(1)/(2)`
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