A neuroscientist wants to know if physical exercise changes reaction speed in elderly people. A total of 14 older volunteer participants were found. One sample of n = 7 subjects received an exercise treatment, while the second sample (n = 7) of participants were given stretching lessons for the same amount of time per week. Reaction speed was tested on a computer program after six weeks of treatment. Reaction speed was measured in milliseconds. Data shown below. What is the type of statistical test you could use on these data? _____________________ Why this test? ___________________________________________________________ What is the I.V.? ___________________ What is the D.V.? ______________________ Use the data below to fill in the blanks to compute your tcalculated. stretch group exercise group nstretch = ____ dfstretch = _____ nexercise = _____ dfexercise = ____ ∑Xstretch = 434 M Stretch = _____ ∑Xexercise = 371 M Exercise = ______ SS stretch = 228 SD2stretch = _____ SDstretch = _______ SSExercise = 76 SD2Exercise = ______ SDExercise = ______ Use the 4 step method for hypothesis testing. (alpha = .05, two tailed test) include an effect size measure if appropriate
A neuroscientist wants to know if physical exercise changes reaction speed in elderly people.
A total of 14 older volunteer participants were found. One sample of n = 7 subjects received an exercise treatment, while the second sample (n = 7) of participants were given stretching lessons for the same amount of time per week.
Reaction speed was tested on a computer program after six weeks of treatment. Reaction speed was measured in milliseconds. Data shown below.
What is the type of statistical test you could use on these data? _____________________
Why this test? ___________________________________________________________
What is the I.V.? ___________________ What is the D.V.? ______________________
Use the data below to fill in the blanks to compute your tcalculated.
stretch group exercise group
nstretch = ____ dfstretch = _____ nexercise = _____ dfexercise = ____
∑Xstretch = 434 M Stretch = _____ ∑Xexercise = 371 M Exercise = ______
SS stretch = 228 SD2stretch = _____ SDstretch = _______ SSExercise = 76 SD2Exercise = ______ SDExercise = ______
Use the 4 step method for hypothesis testing. (alpha = .05, two tailed test) include an effect size measure if appropriate
Summarize your results below in APA format.
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