Just need part C and D please. Please show all work and highlight/bold 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 Moll 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 con 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 and correct. Average number expected 1.600 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 and correct. Average number of persons 2.400 portions 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 0.3000 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. Time taken 0.4000 hour