*37*

A

**paired samples t-test**is used to compare the means of two samples when each observation in one sample can be paired with an observation in the other sample.To perform a paired samples t-test, simply fill in the information below and then click the “Calculate” button.

**Sample 1**

**Sample 2**

**t = ** -1.608761

**df = ** 22

**p-value (one-tailed) = ** 0.060963

**p-value (two-tailed) = ** 0.121926