If the random variable Y = a + bX,then 
= 
.
Definitions:
Circulation of Blood
The continuous movement of blood through the heart and blood vessels, which delivers nutrients and oxygen to all parts of the body and removes waste products.
Heart
A muscular organ in most animals, including humans, which pumps blood through the blood vessels of the circulatory system.
Essential Attributes
Characteristics or features that are fundamental or necessary to the identity, nature, or function of something.
Competitive Sporting
Refers to sports activities that involve contest, competition or rivalry between two or more parties aiming to win or perform better than the others.
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