MyLab Operations Management with Pearson eText -- Access Card -- for Operations Management: Processes and Supply Chains
MyLab Operations Management with Pearson eText -- Access Card -- for Operations Management: Processes and Supply Chains
11th Edition
ISBN: 9780133885583
Author: Lee J. Krajewski, Manoj K. Malhotra, Larry P. Ritzman
Publisher: PEARSON
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Chapter B, Problem 4P

A

Summary Introduction

Interpretation: J’s utilization according to queuing method is to be determined.

Concept Introduction:

Queuing method is the best practice for enhancing the service provided within an organization by utilizing its resources.

B

Summary Introduction

Interpretation: The average number of machines repaired or waiting to be repaired are to be calculated.

Concept Introduction:

The waiting line model is used to calculate the performance. The probability in a waiting line requires waiting for the service.

C

Summary Introduction

Interpretation: The average time of a machine that is out of service is to be calculated.

Concept Introduction:

The waiting line is the time delay to reach the station and it improves the service channel. For completion of the activity, an object spends time waiting in line.

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Benny’s Arcade has six video game machines. The average time between machine failures is 50 hours. Jimmy, the maintenance engineer, can repair a machine in 15 hours on average. The machines have an exponential failure distribution, and Jimmy has an exponential service-time distribution.a. What is Jimmy’s utilization?b. What is the average number of machines out of service, that is, waiting to be repaired or being repaired?c. What is the average time a machine is out of service?
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