F(x)=0 for x<0

=1/3 for 0<=x<=1/2

=1/2 for 1/2<=x<=3/4

=1 for x>=3/4

Determine,for the random variableX,the

(a) upper quartile

(b) lower quartile

(c) propability mass function of X

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- Feb 22nd 2013, 08:40 AMlancelothelp me determine quartiles of random variables
F(x)=0 for x<0

=1/3 for 0<=x<=1/2

=1/2 for 1/2<=x<=3/4

=1 for x>=3/4

Determine,for the random variableX,the

(a) upper quartile

(b) lower quartile

(c) propability mass function of X - Feb 22nd 2013, 01:08 PMHallsofIvyRe: help me determine quartiles of random variables
Okay, what have you done on this, yourself. Do you know what "upper quartile" and "lower quartile"

**mean**? Do you know how the probability mass function is?