Imagine you now work for Dan's Pet Empurrium, the World's Greatest purrveyor of cat-related items (and other pets! Look we've expanded!). You've been tasked with managing the customer flow for the checkout process. You've decided to start by analyzing the current set-up. Using the information below, report the average time a customer waits in line in minutes (rounded to the nearest tenth of a minute, i. e., one decimal). Current set-up:

# severs Arrival rate Service rate # of lines
1 4 customers/hour 4.4 minutes/customer 1

Assume the arrival and service distributions are Poisson distributed.