Pre-Test Active
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A goal of the Defense Plant Corporation was
to coordinate wartime business and labor.
to oversee wartime production.
to prepare the US for war.
to give money to businesses to fund war production.
O

Aresearch study is done to find the average age of all u.s. factory workers. the researchers asked every factory worker in ohio what their birth year is. this research is an example of a census survey convenience sample simple random sample