What proportion of city residents uses public transportation at least once a week? City planners would like to estimate this proportion and collect information from workers entering a large office building in the center of the city. Which of the following best describes the potential results of this survey?
Answer
A
This is a convenience sample and is likely to overestimate the proportion of residents who take public transportation.
B
This is a convenience sample and is likely to underestimate the proportion of residents who take public transportation.
C
This is a voluntary response sample and is likely to overestimate the proportion of satisfied residents who take public transportation.
D
This is a voluntary response sample and is likely to underestimate the proportion of satisfied residents who take public transportation.