Reference no: EM132843838
The director of the counseling center on campus wants to see if levels of anxiety change across the semester. To find out, she recruits a group of 100 students to participate in her study. She has them complete the Anxiety Scale during the first week of school. Scores can range from 1-100, with higher scores indicating greater anxiety. The students take the Anxiety Scale again during mid-terms and for another time during finals. During the first week, the mean anxiety score was 74.82 (SD = 8.42). During mid-terms, the mean anxiety score was 67.31 (SD = 4.74), while during finals, the mean anxiety score was 76.48 (SD = 6.38).
-Who is the population we are interested in studying?
-Who is the sample?
-Identify the independent variable.
-Identify the dependent variable.
-Identify the level of measurement for the independent variable.
-Identify the level of measurement for the dependent variable.
-Identify the levels of the independent variable
-What statistical test would be appropriate to analyze the data?
-Is the mean of 74.82 a statistic or a parameter?
-Is the mean of 67.31 a descriptive statistic or an inferential statistic?
-Which time (first week, mid-terms,or during finals) has the most variability?
-What is the null hypothesis for this study?
-What is the alternative hypothesis for this study?