Question: the same rate r(a, 3) is (1 parameter.) Show that the sum of two independent Gamma distributed random variables with parameter 3 is Gamma

the same rate r(a, 3) is (1 parameter.) Show that the sum of two independent Gamma distributed random variables with parameter 3 is Gamma distributed. You can assume that the c.f. of distribution it/3). (The parameter a is called the shape parameter, and 3 is called he rate

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