Copy machine problem, Computer Engineering

Assignment Help:

We are trying to figure out how many copy machines we should install in the basement of Stranahan Hall.  Copy machines should be available 24/7.  Students may walk up at any time of the day or night for copying.  Based on past data, it can be assumed that the amount of time a student needs to use the copy machine is described by a discrete probability distribution listed below:

Copying time (in min)

Probability

1

0.25

2

0.25

3

0.25

4

0.25

Interarrival times for student arrivals at the copy machine(s) is described by the following discrete distribution-

Interarrival time (min)

Probability

1

0.2

2

0.2

3

0.2

4

0.15

5

0.25

Students hate spending time waiting at the copy machines for their turn to use them.  Students don't depart from the queue until they use the machine.  Service policy is - first come, first serve (whoever arrives first at the machine gets the priority to use the machine).  Suppose that students  time is valued at $10 per hour, i.e., the student could have used the any time wasted just waiting could have been put to use at that wage rate.  Each copy machine  can be leased at rate of $10 per day.  Cost of leasing copy machines is ultimately charged to the common student services.  Given the above information, answer the following-

  • Assume that the university leases one copy machine. What is the total cost of operating the system per day? (this cost includes the cost of time wasted by the students waiting at the copy machine plus the cost of leasing the copy machine).
  • Assume that the university leases two copy machines. What is the total cost of operating the system per day?
  • Assume that the university leases three copy machines. What is the total cost of operating the system per day?

 You must use Simul 8 to build the model, and obtain necessary information to solve the problem.


Related Discussions:- Copy machine problem

What is critical section problem, What is critical section problem?  Co...

What is critical section problem?  Consider a system having of 'n' processes. Each process has segment of code known as a critical section, in which the process may be changing

Explain the uses of arithmetic processor, Explain the uses of arithmetic pr...

Explain the uses of arithmetic processor A processor has arithmetic processor (as a sub part of it) which executes arithmetic operations.  The data  type,  assumed  to  reside

4, Ask question 4#Minimum 100 words accepted#

Ask question 4#Minimum 100 words accepted#

Basic working of hard disk drive, Q. Basic working of Hard Disk Drive? ...

Q. Basic working of Hard Disk Drive? This is one of the components of today's personal computer having a capacity of order of quite a lot of Giga Bytes and above. A magnetic di

State the web server security through ssl, Web server security through SSL ...

Web server security through SSL (Secure Socket Layer) As it is well known that the Intranets and internet are purely based on use of powerful web servers to deliver information

Which approaches not require knowledge of the system state, Which approache...

Which approaches do not require knowledge of the system state? Ans. Deadlock detection, deadlock prevention and deadlock avoidance; none of the given require knowledge of the s

Operating system, explain network operating system and design issues?

explain network operating system and design issues?

Explain abstract class, What is an interface and what is an abstract class?...

What is an interface and what is an abstract class? Please, expand by examples of using both. Explain why?   Abstract classes are closely related to interfaces. They are classe

What is public key cryptography, What is Public Key Cryptography Publi...

What is Public Key Cryptography Public-key cryptography is a form of modern cryptography which permits users to communicate safely without lastly agreeing on a shared secret

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd