Question

A researcher would like to determine if relaxation training will affect the number of headaches for chronic headache sufferers. For a week prior to training, each participant records the number of headaches suffered. Participants then receive relaxation training and for the week following training the number of headaches is again measured. Do the results indicate a significant difference? Use SPSS to run a paired t-test and show all the steps involved in hypothesis testing. Please attach your response as a Word document. The data are as follows: Before After

6 4

5 1

3 3

3 1

6 2

2 1

4 3

4 2

I understand that I will be using SPSS which i can do, but CAN someone please help me on what to post for the scientific method steps?

Answer 1

Null Hypothesis ,the relaxation training is not effective

Alternative Hypothesis , there is significant difference after the ralaxation training

d = Before -After

The Calculation table is given below:

Patients	Before	After	d=B-A	d^2
1	6	4	2	4
2	5	1	4	16
3	3	3	0	0
4	3	1	2	4
5	6	2	4	16
6	2	1	1	1
7	4	3	1	1
8	4	2	2	4
Total			16	46

Under H0, the test statistic is

Degrees of freedom = n-1= 8-1= 7

Significance level = 0.05

The critical value of t for 7 df at 5% significance level is 2.365

The P-Value is 0.00519

Since p value is less than significance level, Reject H0.

Hence, we have enough evidence to support the claim that there is significant difference.