
Concept explainers
a)
To find the population and sample from given study.
a)

Answer to Problem 1.37RE
Population is all passengers who take a trip involving two or more airlines and sample is 12% of tickets sold for each airline.
Explanation of Solution
Given:
A passenger who takes a trip involving two or more airlines pays the first carrier, which then owes the other carrier a portion of the ticket cost. It is too expensive for the airlines to calculate exactly how much they owe each other. Instead, a sample of about 12% of tickets sold is examined and accounts are settled on that basis.
First need to understand about sample and population.
Population: It is the set of all the possible individuals possessing the characteristic of interest in a study.
Sample: It is the subset of population on which, the actual study performed and from which, the necessary measurements are taken.
In given study,
Population: Here, all passengers who take a trip involving two or more airlines.
Sample: The 12% of tickets sold for each airline.
b)
To explain whether the sample results definitely, probably, probably not, or definitely not yield the correct amount of money for each airline.
b)

Answer to Problem 1.37RE
Definitely not.
Explanation of Solution
Given:
A passenger who takes a trip involving two or more airlines pays the first carrier, which then owes the other carrier a portion of the ticket cost. It is too expensive for the airlines to calculate exactly how much they owe each other. Instead, a sample of about 12% of tickets sold is examined and accounts are settled on that basis.
The people in the sample do not have to take a trip involving two or more airlines and definitely not involving the same two airlines as the ones that owe each other.
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Statistics Through Applications
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