A company is researching the effectiveness of a new website design to decrease the time to access a website. Five website users were randomly selected,and their times (in seconds) to access the website with the old and new designs were recorded. To compare the times,they computed new website design time − old website design time. The results are shown here. 
What is the value of the test statistic?
Definitions:
Premature Junctional Contractions
A type of abnormal heartbeat originating from the atrioventricular junction before the expected time.
Low-Density Lipoprotein
Often referred to as 'bad' cholesterol, it transports cholesterol particles throughout the body which can build up in the arteries leading to heart disease.
Aorta
The main trunk of the arterial system of the body.
Left Ventricle
The chamber of the heart that pumps oxygenated blood to the aorta and throughout the body.
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