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![A part of sum of generalized gamma distribution][1] [1]: /c/portal/getImageAttachment?filename=QQ%E6%88%AA%E5%9B%BE20150603112548.jpg&userId=479461 ? is Gamma function, ki is natural number??k1+...+kn=j means arbitrary combination of ki...
x = RandomVariate[NormalDistribution[1, 3], 10^4]; If x are some random numbers like that, how to write the program about the probability of x