Use SPSS for this Application Exercise: An educational psychologist hypothesizes that regular exercise improves academic achievement. Students are randomly selected from a local high school to participate in a semester long study. Then pairs of students with similar GPAs are randomly assigned to either a group that attends daily exercise classes or not. At the end of the study, each participant's GPA is recorded. What can be concluded with = 0.10? Below are the data.

exercise	control
3.39 2.44 3.12 1.57 2.45 2.19 3.01 3.01 3.49	3.99 2.67 3.65 2.11 2.81 3.91 3.51 3.21 3.61

a) What is the appropriate test statistic? (answered) Related-Samples t-test b) Condition 1: ---Select ONE--- GPA, semester, academic achievement, exercise, control Condition 2: ---Select--- GPA, semester, academic achievement, exercise, control c) Input the appropriate value(s) to make a decision about H₀. p-value = _____ ;

Decision: ---Select ONE--- Reject H0, Fail to reject H0 d) Using the SPSS results, compute the corresponding effect size(s) and indicate magnitude(s). If not appropriate, input and/or select "na" below. d = _____ ;

Magnitude: ---Select ONE--- na, trivial effect, small effect, medium effect, large effect r² = _____ ;

Magnitude: ---Select ONE--- na, trivial effect, small effect, medium effect, large effect e) Make an interpretation based on the results (CHOOSE ONE): The GPA of individuals doing regular exercise was significantly higher than those that do not.

The GPA of individuals doing regular exercise was significantly lower than those that do not.

The GPA of individuals doing exercise did not significantly differ from those in the control group.