Chapter-10
Effect Size, Confidence Intervals, and NHST: Two-Sample Designs
Use the following data set to answer the following questions. To earn full credit show all of your calculations and other work. Explain your answers. Don’t just write a number.
The 26 students who signed up for General Psychology reported their GPA. Each person was matched with another person on the basis of the GPAs, and two groups were formed. One group was taught with the traditional lecture method by Professor Nouveau. The other class could access the Web for the same lectures whenever they wished. At the end of the term, both classes took the same comprehensive final exam, and they also filled out a “Satisfaction Questionnaire.” Scores on both measures are shown below.
Analyze the data with t tests and effect size indexes. Write a conclusion.
You have to use the JASP Software (https://jasp-stats.org/download/) to perform your analysis. Make sure you include the analysis output in your submission. Also, explain your results in detail.
Comprehensive Final Exam Scores Satisfaction
Scores
Traditional Section Online Section Traditional Section Online Section
50 56 25 31
72 75 18 19
64 62 40 38
82 90 31 35
89 91 17 24
65 65 22 20
74 72 14 18
85 87 36 35
80 76 27 31
65 79 22 27
82 77 23 27
75 78 28 28
64 70 20 23
