Question

Do students respond differently after using Biofeedback when compared to before learning to use Biofeedback. Hint:...

Do students respond differently after using Biofeedback when compared to before learning to use Biofeedback. Hint: Anxiety symptoms scale scores where higher scores indicate increased anxiety symptoms). Run the proper t test.

Before                                              After

10                                                        3

12                                                        5

16                                                        6

12                                                        4

14                                                        7

14                                                        6   

Homework Answers

Answer #1

Following table shows the calculations for paired data:

Before After d=before-after (d-mean)^2
10 3 7 0.6889
12 5 7 0.6889
16 6 10 4.7089
12 4 8 0.0289
14 7 7 0.6889
14 6 8 0.0289
Total 47 6.8334

Sample size: n = 6

Now,  

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