D Question 23 9 pts 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= EXstretch = 434 M Stretch EXexercise = 371 M Exercise SS stretch = 228 SD stretch SD stretch SSExercise = 76 SD Exercise SD Exercise = 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. Edit View Insert Format Tools Table 12pt V Paragraph BIUAZ TY