Aresearcher wants to know how undergraduate college students at her university feel about federal financial aid. she obtains a list of 1196 undergraduate college students at her university, selects 500 of them at random, and emails a questionnaire to them. 107 questionnaires are returned. of these, 71% stated that they believe that the federal student loan program needs to be completely overhauled. classify the following groups as the population or the sample for this particular study. if a group does not belong in either category, leave it unplaced.