A Consumer Research Group Is Interested in How Older Drivers

A consumer research group is interested in how older drivers view hybrid cars.Specifically, they wish to assess the percentage of drivers in the U.S.50 years of age or older who intend
To purchase a hybrid in the next two years.They selected a systematic sample from a list of
AARP (American Association of Retired Persons) members.Based on this sample, they
Estimated the percentage to be 17%.The sampling frame for this study is

A) all drivers in the U.S.50 years of age or older
B) 17%
C) the list of AARP members
D) how older drivers view hybrid cars
E) none of the above