# Mgmt 36043 assignment 10: queuing analysis

Problem 1 – Queuing Theory – see Week 11

Keuka Park Savings and Loan currently has one drive-in teller window. Cars arrive at a mean rate of 10 per hour. The mean service rate is 12 cars per hour. I have done the calculations for you.

To improve its customer service, Keuka Park Savings and Loan (Problem 4) wants to investigate the effect of a second drive-in teller window. Assume a mean arrival rate of 10 cars per hour. In addition, assume a mean service rate of 12 cars per hour for each window. What effect would adding a new teller window have on the system? Does this system appear acceptable?

 Single server queuing Model Lambda 10 Mu 12.00 Probability system is empty 0.17 Average number in queue 4.17 Average number is system 5.00 Average time in queue 0.42 Average waiting time in system 0.50 Probability arrival has to wait 0.83

 Multiple Server Queuing Model Lambda 10 Mu 12 Number of servers 2 Probability system is empty 0.412 Average number in queue 0.175 Average number in system 1.008 Average time in queue 0.018 Average waiting time in system 0.101 Probability arrival must wait 0.245

Assume that it costs \$35,000 per year to add a server and a onetime charge of \$100,000 to add the second station.

Also assume that we place a VLC of \$20.00 an hour for a customer to wait.

Finally assume the S&L operates 2,080 hours a year.

When does this pay off – if it does. What things would you tout in advertising about the change if you make it?

Problem #2 – Chapter 5

A manager of Paris Manufacturing that produces computer hard drives is planning to lease a new automated inspection system. The manager believes the new system will be more accurate than the current manual inspection process. The firm has had problems with hard drive defects in the past and the automated system should help catch these defects before they are shipped to the final assembly manufacturer. The relevant information is provided below.

Current Manual Inspection System

Annual fixed cost = \$35,000

Inspection variable cost per unit = \$15 per unit

New Automated Inspection System

Annual fixed cost = \$165,000

Inspection variable cost per unit = \$0.55 per unit

a.   Suppose annual demand is 11,000 units. Should the firm lease the new inspection system? Show your work!

b. Assume the cost factors given above have not changed. A marketing representative of NEW-SPEC, a firm that specializes in providing manual inspection processes for other firms, approached the Paris Manufacturing and offered to inspect parts for \$17 each with no fixed cost. They assured Paris Manufacturing the accuracy and quality of their manual inspections would equal the automated inspection system. Demand for the upcoming year is forecast to be 11,000 units. Should the manufacturer accept the offer? Show your work!

Problem #3 – Chapter 15

A bank has set a standard that mortgage applications be processed within a certain number of days of filing.   If, out of a sample of 2,500 applications, 85 fail to meet this requirement, what is the epmo metric and what sigma level does it correspond to?

What is epmo?

What is the number in this problem?

What is the resulting sigma level?

Does this hit or miss the mark for six sigma operations? By how far?

Would you consider this important?

Why?

Basic features
• Free title page and bibliography
• Unlimited revisions
• Plagiarism-free guarantee
• Money-back guarantee
On-demand options
• Writer’s samples
• Part-by-part delivery
• Overnight delivery
• Copies of used sources
Paper format
• 275 words per page
• 12 pt Arial/Times New Roman
• Double line spacing
• Any citation style (APA, MLA, Chicago/Turabian, Harvard)

# Our guarantees

Our customer is the center of what we do and thus we offer 100% original essays..
By ordering our essays, you are guaranteed the best quality through our qualified experts.All your information and everything that you do on our website is kept completely confidential.

### Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

### Zero-plagiarism guarantee

The paper ordered is very original. Orders are checked by the most advanced anti-plagiarism software in the industry which ensures that the the essay written is 100% original. In that regard,we have a zero tolerance policy for plagiarism.

### Free-revision policy

Our Company thrives on excellence and thus we help ensure the Customer’s total satisfaction with the completed Order.To do so, we provide a Free Revision policy as a courtesy service. To receive free revision the Company requires that the Customer provides the request within Fifteen (15) days from the first completion date and within a period of thirty (30) days for dissertations and research papers.

The Company is committed to protect the privacy of the Customer and it will never resell or share any of Customer’s personal information, including credit card data, with any third party. All the online transactions are processed through the secure and reliable online payment systems.

### Fair-cooperation guarantee

By placing an order with us, you agree to the service we provide. We will endeavor to do all that it takes to deliver a comprehensive paper as per your requirements. We also count on your cooperation to ensure that we deliver on this mandate.

## Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
\$26
The price is based on these factors: