Answer:
The Correctional Official is the single most important person who mediates between an offender and society. The Official is expected to be a good role model for others in her or his presence. It is this official who holds the power over an offender's head. S/he can use this power to humiliate, and degrade the offender.
Good question it is importantly because If no one knew then it would be chaos
If I’m not wrong, there’s a table of standard deviations that will tell you the critical value