Please show all work. This question has been answered wrong many times, please highlight all answers

Problem 7-18 (Algo) To support National Heart Week, the Heart Association plans to install a free blood pressure testing booth in El Con Mall for the week Previous experience indicates that, on average, 8.0 persons per hour request a test. Assume arrivals are Poisson distributed from an infinite population. Blood pressure measurements can be made at a constant time of six minutes each. Assume the queue length can be Infinite with the FCFS discipline. a. What average number in line can be expected? (Round your answer to 3 decimal places.) Answer is complete but not entirely correct. Average number expected 0 267 people b. What average number of persons can be expected to be in the system? (Do not round your intermediate calculations. Round your answer to 3 decimal places.) Answer is complete but not entirely correct. Average number of persons 0.000 persons c. What is the average amount of time that a person can expect to spend in line? (Do not round your intermediate calculations. Round your answer to 4 decimal places.) Answer is complete but not entirely correct. Average amount of time 18.0000 hours d. On average, how much time will it take to measure a person's blood pressure, including their waiting time? (Do not round your Intermediate calculations. Round your answer to 4 decimal places.) Answer is complete but not entirely correct. 0.5000 hours Time taken