In a queueing system, customers arrive once every 6 seconds (standard deviation = 5) and services take 5 seconds (standard deviation = 4). (Do not round intermediate calculations. Round your answer to three decimal places.) What is the average time a customer will spend in the queue (in seconds)? seconds For the first three seconds of the day, the arrival rate at the book store is 29 customers per second. The book store is capable of serving 27 customers per second. The last customers arrives exactly three seconds after the start of the day. Assume that the system is empty at the start and that no customer who arrives leaves without being served. (Round your answer to 2 decimal places.) How long will that customers be in the book store (in seconds)? second