The women's department at hector's department store has a single checkout register. Customers arrive at the register at the rate of 11 per hour, it takes the clerk, on average, 4 minutes to check out a customer. SHOW WORK
A. On average, how many customers will be waiting to be check out? Do you think this number is reasonable? Why or why not?
B. How long, on average, will a customer have to wait before the clerk starts serving him or her? Again, is this a reasonable time? If Hector's decides to open another register, what are the trade-offs to consider?