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 deviation of 20. What percentage of the time will the number of boxes of supplies that arrive be greater than 210 or less than 180?

A) 69.15%
B) 46.72%
C) 19.15%
D) 15.87%