Answer:
pretty sure the US bought alaska for dirt cheap, even by 19th century standards.
Answer: alternative D.
Explanation: Dr. DeVries should choose his sample population randomly in order for his research to be representative, even having a specific population, which is high school seniors, that he wants to study. By <u>choosing specifically students from an exclusive college preparatory school, he isn't considering how students from other schools might perform in his research test</u>. This would be a very important step for him to understand how the practice in problem solving affects the ability related to it. Otherwise, he will have a distorted result.
National Industrial Recovery Act (NIRA)<span>
</span>
He outlined his goals of a thrifty government and the support of states to better protect their freedoms than a large federal body.