Question
In: Operations Management
Western Airlines merged with a smaller airline recently. Every day since the merger, a random sample...
Western Airlines merged with a smaller airline recently. Every day since the merger, a random sample of 30 Western flights has been analyzed. A flight that takes off more than 10 minutes after its scheduled departure time is considered to be late; otherwise, it is not late. Western’s performance over the past 10 days is shown in the table below.
Day 1 2 3 4 5 6 7 8 9 10 # Late Flights 4 2 5 9 2 3 3 1 2 8
(I) What type of control chart would we use to monitor this process? ( Circle 1 ) (a) X-bar chart (b) R-chart (c) p-chart (d) c-chart
(II) And why?
(III) What are 2-sigma control limits for this process?
(IV) Is the process in control, after you plot and analyze the Control charts? Why/Why not?
Solutions
keosha answered 1 year agoRelated Solutions
Western Airlines merged with a smaller airline recently. Every day since the merger, a random sample...
Western Airlines merged with a smaller airline recently.
Every day since the merger, a random sample of 30 Western flights
has been analyzed. A flight that takes off more than 10 minutes
after its scheduled departure time is considered to be late;
otherwise, it is not late. Western’s performance over the past 10
days is shown in the table below.
Day
1 2 3 4 5 6 7 8 9 10
# Late Flights 4 2 5 9 2 3...
UAL and Continental Airlines merged. What approvals needed to occur? Why did the merger occur? Was...
UAL and Continental Airlines merged. What approvals needed to
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customers about the airline?
Freedom Airlines recently started operations in the Southwest. The airline owns two airplanes, one based in...
Freedom Airlines recently started operations in the Southwest.
The airline owns two airplanes, one based in Phoenix and the other
in Denver. Each airplane has a coach section with 140 seats
available. Each afternoon, the Phoenix based airplane flies to San
Francisco with stopovers in Las Vegas and in San Diego. The
Denver-based airplane also flies to San Francisco with stopovers in
Las Vegas and in San Diego. Each airplane returns to its home-base
with no stopovers.
Freedom Airlines uses...
A simple random sample of 100 flights of a large airline (call this airline 1) showed...
A simple random sample of 100 flights of a large airline (call
this airline 1) showed that 64 were on time. A simple random sample
of 100 flights of another large airline (call this airline 2)
showed that 80 were on time. Let p1 and p2 be the proportion of all
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21.Suppose we wish to conduct the test at a 10% significance
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A random sample of 400 passengers of an airline is polled after their flights. Of those...
A random sample of 400 passengers of an airline is polled after
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A random sample of n1 = 16 communities in western Kansas gave the following information for...
A random sample of n1 = 16 communities in western Kansas gave
the following information for people under 25 years of age.
x1: Rate of hay fever per 1000 population for people under 25 96
92 120 130 91 123 112 93 125 95 125 117 97 122 127 88 A random
sample of n2 = 14 regions in western Kansas gave the following
information for people over 50 years old.
x2: Rate of hay fever per 1000 population for...
A random sample of n1 = 16 communities in western Kansas gave the following information for...
A random sample of n1 = 16 communities in
western Kansas gave the following information for people under 25
years of age.
x1: Rate of hay fever per 1000
population for people under 25
96
88
122
130
90
123
112
93
125
95
125
117
97
122
127
88
A random sample of n2 = 14 regions in
western Kansas gave the following information for people over 50
years old.
x2: Rate of hay fever per 1000
population for...
A random sample of n1 = 16 communities in western Kansas gave the following information for...
A random sample of n1 = 16 communities in
western Kansas gave the following information for people under 25
years of age.
x1: Rate of hay fever per 1000
population for people under 25
100
92
122
129
94
123
112
93
125
95
125
117
97
122
127
88
A random sample of n2 = 14 regions in
western Kansas gave the following information for people over 50
years old.
x2: Rate of hay fever per 1000
population for...
A random sample of n1 = 16 communities in western Kansas gave the following information for...
A random sample of n1 = 16 communities in
western Kansas gave the following information for people under 25
years of age.
x1: Rate of hay fever per 1000
population for people under 25
98
90
120
128
92
123
112
93
125
95
125
117
97
122
127
88
A random sample of n2 = 14 regions in
western Kansas gave the following information for people over 50
years old.
x2: Rate of hay fever per 1000
population for...
A random sample of n1 = 16 communities in western Kansas gave the following information for...
A random sample of n1 = 16 communities in western Kansas gave
the following information for people under 25 years of age. x1:
Rate of hay fever per 1000 population for people under 25 100 91
119 127 93 123 112 93 125 95 125 117 97 122 127 88 A random sample
of n2 = 14 regions in western Kansas gave the following information
for people over 50 years old. x2: Rate of hay fever per 1000
population for...
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