Meijer G and Fox H functions are extraordinary tools to represent distributions of random
variables and statistics, in particular when these statistics have the same distribution as that …

This paper addresses the challenge of testing the hypothesis of what the authors call a
nested block circular‐compound symmetric (NBCCS) covariance structure for the population …

In this article the authors show how by adequately decomposing the null hypothesis of the
multi-sample block-scalar sphericity test it is possible to obtain the likelihood ratio test …

The linear regression models are widely used in different research fields, and often there is
the need to analyze if there are similarities between two or more different linear models or to …

In this paper a review is made from the primordia of the history of likelihood ratio tests for
covariance structures and equality of mean vectors through the development of likelihood …

A first approach, based on recently obtained asymptotic expansions of ratios of gamma
functions, enables the obtention of the distribution of the product of independent and …

In this work a likelihood ratio test which allows to test simultaneously if, several covariance
matrices are equal and block diagonal with different specific structures in the diagonal …

The author derives the likelihood ratio test statistic for the equality of mean vectors when the
covariance matrices are assumed to have a compound symmetric structure. Its exact …

In this paper, the likelihood ratio to test between two Beta distributions is addressed. The
exact distribution of the likelihood ratio statistic, for simple hypotheses, is obtained in terms …

In this paper the authors study the problem of testing the hypothesis of a doubly
exchangeable covariance matrix for three-level multivariate observations, taken on m …