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 Poison probability distribution with an arrival rate of two jobs per 8-hour day. The time required to complete the jobs follows a normal probability distribution, with a mean time of 3.2 hours and a standard deviation of 2 hours. Answer the following questions, assuming that Gubser uses one welder to complete all jobs: d. What is the average time a job waits before the welder can begin working on it? e. What is the average number of hours between when a job is received and when it is completed? f.What percentage of the time is Gubser's welder busy?

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
icon
Related questions
Question

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 Poison probability distribution with an arrival rate of two jobs per 8-hour day. The time required to complete the jobs follows a normal probability distribution, with a mean time of 3.2 hours and a standard deviation of 2 hours. Answer the following questions, assuming that Gubser uses one welder to complete all jobs:

d. What is the average time a job waits before the welder can begin
working on it?
e. What is the average number of hours between when a job is
received and when it is completed?
f.What percentage of the time is Gubser's welder busy?

Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 6 images

Blurred answer
Recommended textbooks for you
College Algebra
College Algebra
Algebra
ISBN:
9781337282291
Author:
Ron Larson
Publisher:
Cengage Learning