Natalia notices that if she does not sleep a lot at night, she feels tired the next day. what relationship (if any) exists between hours of sleep and degree of exhaustion?

The relation is an inverse correlation.

An inverse correlation is present when two variables are connected in a way in which they move in opposite directions.

In this case, as sleep decreases (negative), exhaustion increases (positive) in a similar pattern.

answer; the president uses mass media to gain support for policies;