Operations and Supply Chain Management, 9th Edition WileyPLUS Registration Card + Loose-leaf Print Companion
Operations and Supply Chain Management, 9th Edition WileyPLUS Registration Card + Loose-leaf Print Companion
9th Edition
ISBN: 9781119371618
Author: Roberta S. Russell
Publisher: Wiley (WileyPLUS Products)
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Chapter 5, Problem 28P

a)

Summary Introduction

To determine: The average number of customers in the salon, the average waiting time and average number of customers waiting to be served.

b)

Summary Introduction

To determine: If management adds a 5th stylist, how will it impact waiting time.

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The Hair Port is a hair-styling salon at Riverside Mall. Four stylists are always available to serve customers on a first-come, first-served basis. Customers arrive at an average rate of four per hour (Poisson distributed), and the stylists spendan average of 45 minutes (exponentially distributed) oneach customer.a. Determine the average number of customers in thesalon, the average time a customer must wait, and theaverage number waiting to be served.b. The salon manager is considering adding a fifth stylist.Would this have a significant impact on waiting time?
One field representative services five customers for a computer manufacturer. Customers request assistance at an average (Poisson-distributed) rate of once every four working days. The field representative can handle an average (Poisson-distributed) of one call per day. Determine: Use Table 1. a. The expected number of customers waiting. (Round your answer to 3 decimal places.)  Expected number of customers waiting             b. The average length of time customers must wait from the initial request for service until the service has been completed. (Round your answer to 2 decimal places.)  Average length of time            days c. The percentage of time the service rep will be idle. (Round your answer to 1 decimal place.)  Percentage of Idle time             d. By how much would your answer to part a be reduced if a second field rep were added? (Round your answer to 3 decimal places.)  Reduced number of customer(s)              Please answer part C
Explain how the design of a waiting system can negatively affect customers.

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Operations and Supply Chain Management, 9th Edition WileyPLUS Registration Card + Loose-leaf Print Companion

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