NBA Draft Picks. From Wikipedia's online document "Lis of First Overall NBA Draft Picks," we found that, since $1947$, $10.4\%$of the number-one draft picks in the National Basketball Association have been other than U.S. nationals.

a. Identify the population.

b. Identify the specified attribute.

c. Is the proportion $0.104(10.4\%)$a population proportion or a sample proportion? Explain your answer.

Since $1947$,$10.4\%$ of the number-one draft picks in the National Basketball Association have been other than U.S. nationals.

Since then, non-U.S. nationals have accounted for $1947$, $10.4\%$of the number-one draught picks in the National Basketball Association.

Since $1947$, the population of this area has been made up of NBA players who have been selected first in the draught.

Since $1947,$$10.4\%$ of the number-one draft picks in the National Basketball Association have been other than U.S. nationals.

Since then, non-U.S. nationals have accounted for $1947$,$10.4\%$ of the number-one draught picks in the National Basketball Association.

The nationality of the players, which are not from the United States, is a unique attribute in this case.

Since $1947$,localid="1651244018833" role="math" $10.4\%$of the number-one draft picks in the National Basketball Association have been other than U.S. nationals.

Since then, non-U.S. nationals have accounted for $1947$, $10.4\%$of the number-one draught picks in the National Basketball Association.

Proportion $0.104$in this case $10.4\%$

Because it accounts for all number-one draught picks since role="math" localid="1651243926974" $1947$ is the population proportion.