Discussion:
Q: The Business Administration department at a local university delivers some of its courses using online instruction. Of the two statistics courses offered, one is delivered online and the other is delivered on campus. Eighteen pairs of students are selected, who are well matched on a number of years and grades of mathematics courses in high school and college, class status (i.e., freshmen, sophomore, junior, senior), and previous GPA. Use the 8-step hypothesis testing procedure to report the findings and include a copy of the computer printout.
• Null Hypothesis
• Alternative Hypothesis
• Selection and justification of statistical test
• Level of significance
• Critical region
• Test statistic
• Decision about the null hypothesis
• Interpretation of results, that is, do the mean grades on this examination differ for the two groups? What conclusions can be reached about the two types of delivery methods from this analysis? What are some possible recommendations?
The grade of the 18 pairs of students on the final examination common to both groups is listed below:
Table: Final Examination Grades According to Instructional Delivery
Pair Onine On-Campus
1 85 88
2 73 78
3 81 79
4 92 88
5 65 66
6 78 72
7 88 85
8 75 72
9 78 79
10 84 80
11 86 90
12 70 68
13 83 88
14 90 86
15 88 92
16 74 70
17 60 64
18 94 92