Multiple Choice
For a survey of senior citizens, a copy of the annual city census is obtained, and 30,000 residents sixty-five years of age and older are identified. A total of 400 seniors is selected, of whom 250 are interviewed. There are __________ senior citizens in the sampling frame.
A) 30,000
B) 400
C) 250
D) an unknown number of
Correct Answer:
Verified
Correct Answer:
Verified
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