Concept explainers
(a)
To find: the type of sampling method
(a)
Answer to Problem 41E
This sample is a self-selected sample.
Explanation of Solution
Calculation:
Inthis case, people can choose whether to respond to the survey or not. So, it is sample in which members of a population can volunteer.
Thus, this sample is a self-selected sample.
Conclusion:
Thus, this sample is a self-selected sample.
(b)
To find: the population that is likely to respond to the survey.
(b)
Answer to Problem 41E
Therefore, it can be concluded that this survey is probably biased as the sample here is not the representative of the population.
Explanation of Solution
Calculation:
People who spend a lot of time on the internet and visit that website are more likely to respond to the survey.
It can be concluded that this survey is probably biased as the sample here is not the representative of the population.
Conclusion:
Therefore, it can be concluded that this survey is probably biased as the sample here is not the representative of the population.
Chapter 11 Solutions
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