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If X is a continuous r.v., then the func...

If X is a continuous r.v., then the function f(x) is said to p.d.f. of X, if

A

`f(x)=0" for all "x in R`

B

`f(x)ne0" for all "x in R`

C

`int_(-oo)^(oo)f(x)dx=1`

D

`f(x)le0" for all "x in R`

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The correct Answer is:
C
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