Estimation of P(X ≤ Y) for discrete distributions with non-identical support

Mriganka Mouli Choudhury, Rahul Bhattacharya, Sudhansu S. Maiti
2022 Statistics in Transition New Series  
The Uniformly Minimum Variance Unbiased (UMVU) and the Maximum Likelihood (ML) estimations of R = P(X ≤ Y) and the associated variance are considered for independent discrete random variables X and Y. Assuming a discrete uniform distribution for X and the distribution of Y as a member of the discrete one parameter exponential family of distributions, theoretical expressions of such quantities are derived. Similar expressions are obtained when X and Y interchange their roles and both variables
more » ... e from the discrete uniform distribution. A simulation study is carried out to compare the estimators numerically. A real application based on demand-supply system data is provided.
doi:10.2478/stattrans-2022-0029 fatcat:6sjwrxcsjnckhotany3qruwemy