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, 09:28 AMlancelotHelp me determine the quartiles of random variablesF(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, 05:05 PMchiroRe: Help me determine the quartiles of random variables
Hey lancelot.

Hint: Try relating the quartiles to a probability expression (i.e. P(X < x) = q for some quartile value q).