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20 Dec 2021
Problem 116
Page 623
Section: HOMEWORK
Chapter 11: THE CHI-SQUARE DISTRIBUTION
Textbook ExpertVerified Tutor
20 Dec 2021
Given information
The average population delay is no more than 15 minutes, and the variance is no more than 150 minutes.
The average time in the sample is 22 minutes, while the standard deviation is 15 minutes.
Step-by-step explanation
Step 1.
Calculate the degree of freedom.
Therefore Chi-square distribution with 
can be used.
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Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208
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