hypoexponential distribution
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Mathematics ◽  
2020 ◽  
Vol 8 (12) ◽  
pp. 2207
Author(s):  
George P. Yanev

The (general) hypoexponential distribution is the distribution of a sum of independent exponential random variables. We consider the particular case when the involved exponential variables have distinct rate parameters. We prove that the following converse result is true. If for some n≥2, X1,X2,…,Xn are independent copies of a random variable X with unknown distribution F and a specific linear combination of Xj’s has hypoexponential distribution, then F is exponential. Thus, we obtain new characterizations of the exponential distribution. As corollaries of the main results, we extend some previous characterizations established recently by Arnold and Villaseñor (2013) for a particular convolution of two random variables.


2015 ◽  
Vol 9 ◽  
pp. 7063-7070 ◽  
Author(s):  
Dodi Devianto ◽  
Lutfiana Oktasari ◽  
Maiyastri

2014 ◽  
Vol 4 (3) ◽  
pp. 322-332 ◽  
Author(s):  
Khaled Smaili ◽  
Therrar Kadri ◽  
Seifedine Kadry

2013 ◽  
Vol 04 (04) ◽  
pp. 624-631 ◽  
Author(s):  
Khaled Smaili ◽  
Therrar Kadri ◽  
Seifedine Kadry

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