The registrar at a small liberal arts college computes description summaries for all members of the entering class on a regular basis.For example,the average high school GPA for the entering students in the most recent year was 3.16.The Chemistry department is interested in helping all students who wish to take a chemistry class identify the appropriate course,so they offer a placement exam.They randomly select a subset of 175 students who took this exam during the past decade,and found they had an average score on the exam of 71.05.The population of interest to the Chemistry department in this study is:
A) the 175 selected students who took this exam during the past decade.
B) all entering students during the most recent year.
C) all entering students during the past decade.
D) all students who took the chemistry placement exam during the past decade.

Question

Quizplus · Accepted Answer

The population of interest to the Chemistry department in this study is all students who took the chemistry placement exam during the past decade. This is because the department is interested in helping students identify the appropriate course, and the placement exam is used as a tool to assess their readiness for different levels of chemistry courses. The subset of 175 students who took the exam during the past decade is used as a sample to estimate the average score on the exam for the larger population of all students who took the exam during that time period. The average high school GPA for the entering students in the most recent year is not relevant to this study as it is not directly related to the placement exam for chemistry courses.

The Registrar at a Small Liberal Arts College Computes Description