A manager in a store is considering two configurations for the checkout area which has two cashiers: Option 1: a single line for both cashiers (one single line with two servers). Option 2: a roped independent line for each cashier (two independent lines with a single server). Use the following information to calculate the average waiting time per customer for each configuration: On average 5 customers per minute arrive at the checkout line (the average arrival rate to each line in Option 2 is 2.5 customer/min). The standard deviation of the time between arrivals is 0.20 minutes (the standard deviation of the time between arrivals in Option 2 is 0.40 minutes). On average, each cashier can process 4 customers per minute. The standard deviation of the service time is 0.25 minutes. Input the average waiting time per customer for each option (use 2 decimal points)