Dr. vandepolder is conducting a study on mid-west american college-students' radio- listening habits. he doesn't have the resources to survey all college students in the mid-west, so he uses census data to randomly select a group of several thousand students from michigan, wisconsin, illinois and minnesota to participate in the study. in this study, the group of all mid-west american college students is called the while the group randomly selected from michigan, wisconsin, illinois and minnesota is called the

1- Control Group  2- Experimental Group

Explanation: In a study or experiment the data that the researcher gets from the experimental group is then compared with the data of the control group.

In this particular case, the control group is the group of all mid-west American College students, while the experimental group is the group conformed by the randomly selected students from Michigan, Wisconsin, Ilinois and Minnesota.

answer; eliminate parking problems in cities, because a car took up only half as much space as a horse and buggy;

american political culture includes a plenty of focus views and preferences. not all westerns experience the same opinions, of course, but the large preponderance promises to these general ideas, including equality, justice, freedom, individualism, integrity, and difference.

the united states is a democratic republic. residents elect representatives to governmental, nation, and local administration; those deputies create the regulations that command u.s. community. although emptiness in u.s. law needs it, in usage, the administrative system is ruled by executive factions.