Textbook ExpertVerified Tutor
20 Dec 2021
Given information
A maximum delay of 15 minutes is expected.
The difference is less than 150 minutes.
Calculates his next 25 flights delays.
With a standard deviation of 15 minutes, the average delay for those 25 flights is 22 minutes.
Step-by-step explanation
Step 1.
Consider, test statistic 
.
Therefore,
Conclusion: Test statistic
.
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Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208
Solutions
Chapter
Section
- Problem 69
- Problem 70
- Problem 71
- Problem 72
- Problem 73
- Problem 74
- Problem 75
- Problem 76
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- Problem 84
- Problem 85
- Problem 86
- Problem 87
- Problem 88
- Problem 89
- Problem 90
- Problem 91
- Problem 92
- Problem 93
- Problem 94
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- Problem 96
- Problem 97
- Problem 98
- Problem 99
- Problem 100
- Problem 101
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- Problem 107
- Problem 108
- Problem 109
- Problem 110
- Problem 111
- Problem 112
- Problem 113
- Problem 114
- Problem 115
- Problem 116
- Problem 117
- Problem 118
- Problem 119
- Problem 120
- Problem 121
- Problem 122
- Problem 123
- Problem 124
- Problem 125
- Problem 126
- Problem 127
- Problem 128
- Problem 129