For a single-server system, the mean arrival rate is 2 customers per hour, and the average number of customers observed waiting in queue is 3.2 customers. 3a: Use Little's Law to determine the average time, in hours, these customers spent waiting in the queue. (use two decimal place accuracy with rounding) For a single-server system, the mean arrival rate is 2 customers per hour, and the average number of customers observed waiting in queue is 3.2 customers. Additionally, you learn the service rate is 2.5 customers served per hour. 3b: What is the expected service time in hours? (use two decimal place accuracy with rounding) For a single-server system, the mean arrival rate is 2 customers per hour, and the average number of customers observed waiting in queue is 3.2 customers. Additionally, you learn the service rate is 2.5 customers served per hour. 3c: What is the expected time, in hours, a customer will spend in the system? (use two decimal place accuracy with rounding) For a single-server system, the mean arrival rate is 2 customers per hour, and the average number of customers observed waiting in queue is 3.2 customers. Additionally, you learn the service rate is 2.5 customers served per hour. 3d: What is the expected number of customers in the system? (use two decimal place accuracy with rounding)