Keyword: «hypothesis testing»

The authors describe the approaches to the construction of teaching methods of mathematical statistics to students of the humanities and technical majors with the aim of developing skills of solving professional tasks using adequate mathematical apparatus.

Recently, science deals with more and more segments of the financial system that have not been studied previously. One of these areas concerns the study of the amalgamation and takeover deals impact on the reaction of the stock market. The purpose of this work is to reveal the degree of the Russian stock market reaction to the occurrence of amalgamation and takeover deals in the oil / gas and financial sectors. In the course of the study, two hypotheses were considered concerning the influence of these deals on the excess market return. There were facts of insider trading in the oil and gas market and negative reactions from investors to announcements of amalgamation and takeover deals in the financial sector. Based on the results obtained, conclusions were drawn about the potential existence of other significant factors that could have an impact on the cumulative excess return of stock market shares at the time of such deals occurrence.