Question

Problem 15-27 (Algorithmic)

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 Poisson probability distribution with an arrival rate of one job per 8-hour day. The time required to complete the jobs follows a normal probability distribution, with a mean time of 5.5 hours and a standard deviation of 2 hours. Answer the following questions, assuming that Gubser uses one welder to complete all jobs:

1. What is the mean arrival rate in jobs per hour? If required, round your answer to two decimal places.
   
   ________ per hour
   
2. What is the mean service rate in jobs per hour? If required, round your answer to four decimal places.
   
   _______ per hour
   
3. What is the average number of jobs waiting for service? If required, round your answer to three decimal places.
   
   _________
   
4. What is the average time a job waits before the welder can begin working on it? If required, round your answer to one decimal place.
   
   _____ hours
   
5. What is the average number of hours between when a job is received and when it is completed? If required, round your answer to one decimal place.
   
   ________ hours
   
6. What percentage of the time is Gubser's welder busy?
   
   ________% of the time the welder is busy.

Answer 1

Let me know in the comment section if anything is not clear. I will reply ASAP!

If you like the answer, please give a thumbs-up. This will be quite encouraging for me.Thank-you!