A researcher at UNLV wished to determine the effect of a yoga program on low back flexibility measured in degrees.The researcher selected a group of ten volunteers, pre-tested them, put them through the yoga program for eight weeks, and then post-tested them.The research hypothesis was that a yoga program would increase low back flexibility.

Subject Pre Post

1 35 37

2 31 35

3 32 38

4 28 33

5 31 35

6 32 37

7 34 38

8 36 39

9 37 42

10 31 34

• What is the dependent variable in this study?
• Which statistical test should be used to analyze the data?
• What would be the null hypothesis for his study?
• What would be the alternate hypothesis for this study?
• Is this a one or two-tailed hypothesis?
• What would be the value of the statistic?
• What is the p-value?
• Would we reject the null hypothesis at alpha = .05?
• Based on the results of this study, what would be the researchers' conclusion?
• What type of error could have been made in this study?