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 between 180 and 210 boxes of supplies arrive in a week?

A) 69.15%
B) 19.15%
C) 53.28%
D) 15.87%