Problem 1. (15 points) LITTLE'S LAW: Diant grocery stores wish to estimate time customers spend, on average, in store and in a checkout line. The results of the data collected are as below: Avg. rate of customers entering store 300 cust/hr Avg. # of customers in store 150 cust % of customers who do not make a purchase 5% Avg. # customers in checkout lanes 28.5 cust a) (6 points) How much time does the average customer spend in the store? b) (9 points) How much total time is spent, on average, to check out? Hint: This is the time that is spent in the checkout lane