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Tcrit, or critical temperature, refers to the temperature above which a substance cannot exist in the liquid phase, regardless of the pressure applied. In this state, the properties of the liquid and gas phases become indistinguishable, resulting in a supercritical fluid. Tcrit is a crucial parameter in thermodynamics and plays a significant role in various applications, including the extraction processes and the behavior of materials under extreme conditions.
What else can I help you with?
What do you do if tcalc is greater than tcrit?
You can accept H0 because the values are significantly different
How does the formula for the t test differ from the formula for the z test?
When we use a z-test, we know the population mean and standard deviation. When we use a t-test, we do not know the population standard deviation and thus must estimate this using the sample data that we have collected. If you look at your z-table and t-table, tcrit for df(infinity) = zcrit because at df(infinity) we would have an entire population and no longer need an estimate.
