A polling company has been hired to determine the approval rating for a local member of Congress. The company completed the poll by creating a survey and instructing representatives to stand outside a mall to give the survey to departing shoppers. The polling representatives
were also instructed to take responses only from participants who were male. Then, the polling company published a report which put the
congressperson's approval rating at 79%.
Why could this sample be biased?
OA. The representatives of the company only gave the survey to a select group, as opposed to a wider, more representative
sample.
ОВ.
The representatives of the company were male.
Oc.
The mall was outside the congressperson's local area.
OD
The survey questions were biased toward the congressperson's opponent.