
Concept explainers
The true statement which gives the best explanation for the reason behind the survey results might not be valid:
- The survey is biased because the agent should have conducted the survey by telephone.
- The survey is biased because the sample consisted of only people who already are interested in townhouses.
- The survey is biased because the sample was a voluntary response sample.
- The survey is biased because the agent should have conducted the survey at a single-family home.

Answer to Problem 21STP
The correct answer is B which conclude that the results of survey might not be valid.
Explanation of Solution
A real estate agent wants to understand that how many people will give the preference for the luxury townhouse at an open house, he has conducted survey.
But the survey result might not be effective because the survey conducted by the agent is biased survey in which the modelinvolved of only people who already are interested in townhouses.
That’s why the best explanation is given by the option B.
Conclusion:
Therefore,B is correct option.
Chapter 13 Solutions
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