Identify Population, Sample, Sampling Frame and Parameter

Multiple Choice

Identify population, sample, sampling frame and parameter.
-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%. Which of the following
Statements about this study is true?

A) 17% of all U.S. drivers 50 years of age or older intend to purchase a hybrid in the next two years.
B) 17% is a parameter.
C) 17% is a statistic.
D) Both A and B
E) Both A and C