n a(n) , one or more variables are identified and controlled or manipulated so that data can be obtained about how they influence the variable of interest identified first. a. variable study b. experimental study c. observational study d. categorical study g

The internet is controlled by: (select one): a. statutes and court cases in federal and state courts in the united states. b. the advanced research projects agency (arpa) and the u.s. department of defense. c. no single government or organization. d. google, yahoo, and the other search engines which have proprietary interest in the content thereon.

Chen's research team randomly assigned some newborns and their mothers either to a breastfeeding promotion group (where breastfeeding was encouraged, but not required) or to a normal pediatric care group (where breastfeeding was neither encouraged nor discouraged). which research method did they use?

17 points! ! (explain your answer)