Answer: There are 32,760 ways that research board can be chosen.
Step-by-step explanation:
Since we have given that
Number of research doctors participating in the study = 15
the research board requires to be established with offices of director, Assistant director, Quality control analyst, and Correspondent.
Since there are 15 choices for the Offices of director,
There are 14 choices for the Assistant director,
There are 13 choices for Quality control analyst,
There are 12 choices for Correspondent.
So, by applying "Fundamental theorem of counting", we get that
Number of ways that research board can be chosen is given by
Hence, there are 32,760 ways that research board can be chosen.