what is a probability function ?

Probability Function : Probability function: A function defined as \[f\left(x\right)=P\left(X=x\right)\] is called probability function of a random variable if it satisfies the following properties (i) \[f\left(x\right)>0\] (ii) \[\sum f\left(x\right)=1\] Example 1: Show that the following function is a probability function…

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