We consider testing about the slope parameter ß when Y - X ß is assumed to be an exchangeable process conditionally on X. This framework encompasses the semi-parametric linear regression model. We show that the usual Fisher’s procedure have non trivial exact rejection bound under the null...

We propose a model to analyze competition between an on-line course and a traditional brick-and-mortar supply for higher education. The brick and mortar supplier is physically located and students pay a transportation cost to attend the traditional course. On the contrary, the on-line course is...

We consider testing about the slope parameter β when Y - X β is assumed to be an exchangeable process conditionally on X. This framework encompasses the semi-parametric linear regression model. We show that the usual Fisher's procedure have non trivial exact rejection bound under the null...