There is a close relationship between confidence intervals and significance tests. Specifically, if a statistic is significantly different from 0 at the 0.05 level, then the 95% confidence interval will not contain 0.
U.S. National Library of Medicine(0.00 / 0 votes)Rate this definition: Air Pressure. The force per unit area that the air exerts on any surface in contact with it. Primarily used for articles pertaining to air pressure within a closed environment.
Atmospheric pressure refers to the force per unit area exerted  against a surface by the weight of air above that surface in the  Earth's atmosphere. The standard atmosphereâ¦ (symbol: atm) is a unit  of pressure at sea level and is equal to 101325 Pascal. Lonchura.