Question 7 of 9 | Page 7 of 9 Question 7 Customers arrive at a single self-serve coffee machine in a busy mall at the rate of 25 per hour, following Poisson distribution. Each customer takes exactly 2 minutes to get his or her coffee. What is Arrival rate? (A) 25 per hour What is the service rate? (u) 30 per day What is average number in waiting lines. (Lq)= 4.17 (up to 2 d.p.) What is average number in waiting lines. (L) 5 What is the expected waiting time in the system (in hours) for a typical customer? (W,)-0.2 hrs Or 12 minutes