A Plant Manager Knows That the Number of Boxes of Supplies

Multiple Choice

A plant manager knows that the number of boxes of supplies received weekly is normally distributed with a mean of 200 and a standard of 20.
-A movie theatre manager knows that the number of patrons per movie is normally distributed with a mean of 200 and a standard deviation of 20.What is the number of patrons,x,where 80% are less than x?

A) 216.8
B) 597.2
C) 413.3
D) 297.2
E) 332.8