Page 84 - Quantitative Data Analysis

Quantitative Data Analysis
Simply Explained Using SPSS

Example # 2

An experiment is conducted to show that blood pressure levels can
be consciously reduced in people trained in this program. The blood
pressure measurements (in millimeters of mercury) listed in the
table represented readings before and after the biofeedback
training of five subjects. Test whether the mean blood pressure is
different after training.

Subject Before After

1 137 130

2 201 180

3 167 150

4 150 153

5 173 162

a. Which test to use? Dependent t-test

b. Null Hypothesis  ,



c. Critical value

The Theory and Applications of Statistical Inferences 68