Concept explainers
a)
To identify the reason behind the biased result.
a)
Answer to Problem 29E
The selection bias or under coverage bias.
Explanation of Solution
This study does not allow to bother the fans in the club seating. However, we were interested in the spending of all fans in the stadium. Therefore, this lead to exclude the part of the population which created selection or under coverage bias.
b)
To explain whether the reason is a sampling error or a non-sampling error.
b)
Answer to Problem 29E
Non-sampling error
Explanation of Solution
This study does not allow to bother the fans in the club seating. However, we were interested in the spending of all fans in the stadium. Therefore, this lead to exclude the part of the population which created selection or under coverage bias. This sampling method will have under coverage bias and we have this will made a non-sampling error.
Chapter 4 Solutions
The Practice of Statistics for AP - 4th Edition
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