Operations Management: Processes and Supply Chains, Student Value Edition Plus MyLab Operations Management with Pearson eText -- Access Card Package (11th Edition)
11th Edition
ISBN: 9780134111056
Author: Lee J. Krajewski, Manoj K. Malhotra, Larry P. Ritzman
Publisher: PEARSON
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Question
Chapter B, Problem 7P
A
Summary Introduction
To determine: Average utilization of the three teller service system.
Introduction: Utilization rate is average the time spend by a person in productivity activity. It is calculated as percentage.
B
Summary Introduction
To determine: The probability that no customers are waiting in line
Introduction: Waiting line model is used to calculate the performance. The probability in a waiting line requires waiting for service.
C
Summary Introduction
To determine: The average number of customers
Introduction: Waiting line model is used to calculate the performance. The probability in a waiting line requires waiting for service.
D
Summary Introduction
To determine: The average time for a customer waiting in line
Introduction: Waiting line model is used to calculate the performance. The probability in a waiting line requires waiting for service.
E
Summary Introduction
To determine: The number of customers at station and in line.
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given the following:
A typical TSA agent at Piedmont Triad International Airport takes approximately 1.15 minutes to screeneach passenger that arrives at the security gate. During the day, a passenger arrives at the gate onaverage every 1.3 minutes. Both the service rate and arrival rate follow a Poisson distribution. Based onthis information and the assumption that only one screening line is open at the security gate, answer thefollowing questions with the given information:
a) average number of passengers waiting in line to be screened is 7
b) average amount of time (in minutes) passengers spend waiting in line is .147 minutes
c) average amount of time (in minutes) passengers spend in the screening system?.166 minutes
1. What is percent of the time does the typical TSA agent spend actively screening passengers?
2. Throughout the day, passenger arrival rates vary with the greatest number of passengers arriving about 45 minutes before a flight is expected to depart. If during this…
Given the following Operating Characteristics from a queuing model with time units specified in hours, answer the five questions:
Po = 0.4000
Lq = 0.9000
L = 1.5000
Wq = 0.2000
W = 0.3000
Pw = 0.6000
What is the average time, in minutes, a customer waits in line before being served?
What is the average time, in minutes, a customer spends waiting and being served?
What is the average number of customers in the system?
What is the probability that there are no customers in the system?
If the system serves a customer every 4 minutes, what is the service rate?
Given information:
A typical TSA agent at Piedmont Triad International Airport takes approximately 1.15 minutes to screen each passenger that arrives at the security gate. During the day, a passenger arrives at the gate on average every 1.3 minutes. Both the service rate and arrival rate follow a Poisson distribution. Based on this information and the assumption that only one screening line is open at the security gate, answers the following questions. Round calculations to at least 3 decimal places. Note: Round each calculation to at least 3 decimal places.
Arrival time =60/1.3=46.153
Server Rate =60/1.15=52.174
L=expected number of passengers in queue =6.780
waiting time in queue =.1469
time spent screening=.1660
please answer the 2 foloowing questions
What is percent of the time does the typical TSA agent spend actively screening passengers?
Throughout the day, passenger arrival rates vary with the greatest number of passengers arriving about 45 minutes before a flight is…
Chapter B Solutions
Operations Management: Processes and Supply Chains, Student Value Edition Plus MyLab Operations Management with Pearson eText -- Access Card Package (11th Edition)
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