Suppose that the number of customers who enter a supermarket each
hour is normally distributed with a mean of 540 and a
standard deviation of 210. The supermarket is open
13 hours per day. What is the probability that the
total number of customers who enter the supermarket in
one day is greater than 7700? (Hint: Calculate the
average hourly number of customers necessary to
exceed 7700 in one 13-hour day.)
Probability =