Air Passengers' Complaints In recent months, airline passengers have expressed much more dissatisfaction with airline service than ever before. Complaints include flight delays, lost baggage, long runway delays with little or no onboard service, overbooked flights, cramped space due to fuller flights, canceled flights, and grumpy airline employees. A majority of dissatisfied fliers merely grin and bear it. In fact, in the mid-19905, the average number of complaints per 100,000 passengers boarded was only 0.66. For several years, the average number of complaints increased to 0.74, 0.86, 1.08, and 1.21. In 2014, according to the Department of Transportation, the industrywide figure is an average of 1.34 complaints per 100,000 passengers. Alaska Airlines had the fewest average number of complaints per 100,000 with o.42, followed by Southwest Airlines with 0.53. Frontier Airlines had the highest average number of complaints per 100,000 with 3.91 followed by United Airlines with 2.71. Because these average numbers of complaints per 100,000 are relatively small and occur randomly, such complaints may follow a Poison distribution. In such a case, à represents the average number of complaints; and the interval is 100,000 passengers. For example, using ^ = 1.34 complaints (average for all airlines), if 100,000 boarded passengers were contacted, the probability that exactly three of them logged a complaint to the Department of Transportation could be computed as (1.34)°, A-12A .1050 That is, if 100,000 boarded passengers were contacted over and over, 10.50% of the time exactly three would have logged complaints with the Department of Transportation. THINGS TO PONDER 1. Based on the figures given in this feature, can you reach any conclusions about the rate of passenger complaints in general? 2. Passenger complaints appear to be rare occurrences. Can you suggest some reasons why this is the case?
Air Passengers' Complaints In recent months, airline passengers have expressed much more dissatisfaction with airline service than ever before. Complaints include flight delays, lost baggage, long runway delays with little or no onboard service, overbooked flights, cramped space due to fuller flights, canceled flights, and grumpy airline employees. A majority of dissatisfied fliers merely grin and bear it. In fact, in the mid-19905, the average number of complaints per 100,000 passengers boarded was only 0.66. For several years, the average number of complaints increased to 0.74, 0.86, 1.08, and 1.21. In 2014, according to the Department of Transportation, the industrywide figure is an average of 1.34 complaints per 100,000 passengers. Alaska Airlines had the fewest average number of complaints per 100,000 with o.42, followed by Southwest Airlines with 0.53. Frontier Airlines had the highest average number of complaints per 100,000 with 3.91 followed by United Airlines with 2.71. Because these average numbers of complaints per 100,000 are relatively small and occur randomly, such complaints may follow a Poison distribution. In such a case, à represents the average number of complaints; and the interval is 100,000 passengers. For example, using ^ = 1.34 complaints (average for all airlines), if 100,000 boarded passengers were contacted, the probability that exactly three of them logged a complaint to the Department of Transportation could be computed as (1.34)°, A-12A .1050 That is, if 100,000 boarded passengers were contacted over and over, 10.50% of the time exactly three would have logged complaints with the Department of Transportation. THINGS TO PONDER 1. Based on the figures given in this feature, can you reach any conclusions about the rate of passenger complaints in general? 2. Passenger complaints appear to be rare occurrences. Can you suggest some reasons why this is the case?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Air Passengers' Complaints
In recent months, airline passengers have expressed much more dissatisfaction with airline
service than ever before. Complaints include
flight delays, lost baggage, long runway delays with little or no onboard service, overbooked
flights, cramped space due to fuller flights,
canceled flights, and grumpy airline employees. A majority of dissatisfied fliers merely grin and
bear it. In fact, in the mid-19905, the
average number of complaints per 100,000 passengers boarded was only 0.66. For several years,
the average number of complaints
increased to 0.74, 0.86, 1.08, and 1.21.
In 2014, according to the Department of Transportation, the industrywide figure is an average of
1.34 complaints per 100,000 passengers.
Alaska Airlines had the fewest average number of complaints per 100,000 with o.42, followed by
Southwest Airlines with 0.53. Frontier
Airlines had the highest average number of complaints per 100,000 with 3.91 followed by United
Airlines with 2.71. Because these average
numbers of complaints per 100,000 are relatively small and occur randomly, such complaints may
follow a Poison distribution. In such a
case, à represents the average number of complaints; and the interval is 100,000 passengers.
For example, using ^ = 1.34 complaints (average for all airlines), if 100,000 boarded passengers
were contacted, the probability that exactly
three of them logged a complaint to the Department of Transportation could be computed as
(1.34)°,
A-12A
.1050
That is, if 100,000 boarded passengers were contacted over and over, 10.50% of the time exactly
three would have logged complaints with
the Department of Transportation.
THINGS TO PONDER
1. Based on the figures given in this feature, can you reach any conclusions about the rate of
passenger complaints in general?
2. Passenger complaints appear to be rare occurrences. Can you suggest some reasons why this is
the case?
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