SOLUTION: SUPPOSE that X Is a discrete random variable with p(X+0)=.25,P(X+2)=.125 AND P(X=3)=.5.PLOT THE PROBABILITY MASS FUNCTION AND CUMULATIVE DISTRUTION FUNCTION OF X.

Question 366456: SUPPOSE that X Is a discrete random variable with p(X+0)=.25,P(X+2)=.125 AND P(X=3)=.5.PLOT THE PROBABILITY MASS FUNCTION AND CUMULATIVE DISTRUTION FUNCTION OF X.

Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
I got a feeling you meant the following:
p(X=0)=.25,
P(X=1)=.125
P(X=2)=.125 and
P(X=3)=.5, right?
The cumulative distribution function is
F(X = 0) = 0.25
F(X = 1) = 0.375
F(X = 2) = 0.5
F(X = 3) = 1.
It's easy to plot the probability mass function for this distribution.

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