Question

A researcher conducted a survey to determine whether people in a certain large town prefer watching sports on television to attending the sporting event. The researcher asked 117 people who visited a local restaurant on a Saturday, and 7 people refused to respond. Which of the following factors makes it least likely that a reliable conclusion can be drawn about the sports-watching preferences of all people in the town?

• A. Sample size
• B. Population size
• C. The number of people who refused to respond
• D. Where the survey was given

Answer 1

The correct option is D Where the survey was given

$\Rightarrow$ Here, the correct answer is option $D$.

$\Rightarrow$ If the researcher wants to draw a reliable conclusion about all people in the town, she needs to select her sample randomly from all people in the town.

$\Rightarrow$ We don’t know anything about the restaurant: it could be a fancy place with waiters in tuxedos, or it could be the local burgers and wings joint with 50 TVs showing sports games.