If you have samples of n 1 equals 22 and n 2 equals 20, in performing the pooled-variance t test, you have 40 degrees of freedom.
The t-test method is a method where we analyze two sets of data which both these data are independent of each other. This pooled variance test helps us in getting the overall variance in both these different sample sets when we know that both the sample sets are almost equal.
To calculate degrees of freedom, we have the formula
df = n1 +n2 -2
According to the question, n1= 22 and n2= 20
Therefore, degree of freedom= 22 +20 -2 = 40
Hence, degree of freedom is 40.
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There are only two American Indians serving in he house at one time.
Answer:
Kangaroo rats
Explanation:
A kangaroo rat is small animal that is found in the deserts of the southern and western U.S.. They are intelligent mammals and are highly adapted to their environment.
The kangaroo rats does not drink water and does not need water at all. They preserve water. They have well adapted themselves to the life of a desert. They can extract moisture form their seed diet. They have an excellent sense of hearing and can hear the approaching owl from mile away.
The kangaroo rats have thick oily coats and they do not sweat though they live in the desert. These adaptations prevent them from losing water in the harsh dry and hot climate.
<span>Seleccionar un problema de investigación. Formulación de hipótesis. Variables de interés. Seleccionar niveles de una variable independiente. Seleccionar una variable dependiente .... dos o más teorías. El interés del investigador puede no tener nada que ver con la solución de un problema psicológico o sociológico existente. Como se discutió en el anterior</span>
