A choral conductor has 1648 singers in her choir, some of them are professional singers. The conductor wants to estimate what percentage of singers are professional, but can't ask all 1648, so she instead asks 688 singers in front and finds 15 who are professionals.
(a) Identify the population
A. percentage of entire singers who are professional
B. entire singers
C. 15/1648
D. None of the above.
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