LIVE MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Gubser Welding, Inc, operates a welding service for construction and automotive repair jobs. Assume that the arrival of jobs at the company's office can be described by a Poiston probability distribution with an arrival rate of the jobs per 8-hour day. The time required to complete the jobs folows a normal probability distribution, with a mean time of 2.8 hours and a standard deviation of 19 hours. Answer the following questions, assuming that Gubser uses one welder to complete at Jobs (a) What is the mean amal rate in jobs per hour? (Round your answer to four decimal places.) per hour (b) What is the mean service rate in jou per hour (Round your answer to four dedmal proces.) per hour le) What is the weape number of jobs waiting for service? (Round your answer to four decimal places) (d) What is the average time in nours) job waits before the wider can begin working on it? (Round your answer to two decimal places) (e) What is the average number of hours between when a job is received and when it is completed (Round your answer to two decimal places) in what percentage of the time is Gubser's welder busy? (Round your answer to the nearest whole number)