%0 Journal Article %T A note on likelihood ratio ordering between parallel systems with two exponential components %A Emanouilidis, Emanuel %A Wang, Jiantian %J Journal of Mathematics and Computer Science %D 2019 %V 19 %N 4 %@ ISSN 2008-949X %F Emanouilidis2019 %X With the aid of computer programming, we obtain a result on stochastic comparison of the lifetime of two parallel systems with two exponential components in terms of likelihood ratio ordering. This result reveals a more comprehensive picture on stochastic ordering between parallel systems and thus provides a relatively satisfied answer to an open problem raised in [N. Balakrishnan, P. Zhao, Probab. Engrg. Inform. Sci., \(\bf 27\) (2013), 403--443]. %9 journal article %R 10.22436/jmcs.019.04.05 %U http://dx.doi.org/10.22436/jmcs.019.04.05 %P 251--257