Every person who corruptly attempts to influence a juror, or any person summoned or drawn as a juror, or chosen as an arbitrator or umpire, or appointed a referee, in respect to his verdict in, or decision of, any cause pending, or about to be brought before him, either:
1. By means of any communication, oral or written, had with him, except in the regular course or proceedings;2. By means of any book, paper or instrument exhibited, otherwise than in the regular course of proceedings;3. By means of any threat, intimidation, persuasion or entreaty; or,4. By means of any promise or assurance of any pecuniary or other advantage; is guilty of a felony.[18-1304, added 1972, ch. 336, sec. 1, p. 870.]