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PART 2 : RANDOM VARIABLE ANE DISCRETE PROBABILITY DISTRIBUTION — Statistics STD 12 Commerce — Question

Gujarat BoardEnglish MediumSTD 12 CommerceStatisticsPART 2 : RANDOM VARIABLE ANE DISCRETE PROBABILITY DISTRIBUTION2 Marks
Question
The probability distribution of a random variable $X$ is as follow $ p(x) =k \cdot 2^x, \text { where } x=-1,0,1$
$ =\frac{k}{2} \text { where } x=2 $ Find the value of $k$.
✓

Answer

$\frac{1}{4}$

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