A citizen wants to propose to the city council extending the hours at the local public library on some weekdays. To measure support for extended hours, the citizen visits neighborhood homes and asks adults the following: "Would you agree that the closing time of the library should be extended by one hour on weekdays to accommodate working families?” Of the 212 adults surveyed, 86% agreed with the statement. Which of the following statements about the results is true? The 86% support provides substantial evidence that the library hours should be extended.
More families should be asked the same question to be sure of community support.
The survey suffers from question wording bias and may not represent true support for the extended hours.
The survey suffers from voluntary response bias and may not estimate true support for the extended hours.