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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Answer:
The experimental group
Explanation:
In every research or experiment, there is always an experimental group and control group.
Experimental Group is simply the group in ang scientific experiment where the experimental procedure is being carried out upon. This group is exposed to the independent variable being tested and the changes are therefore observed and recorded for research purposes. It is known to receive some type of special treatment in relations to the independent variable.
They can also have multiple experimental groups such as high rate and low rate.
They would help play for interstate highways
The sand will get Warmer fast than the water
Answer:
I wouldnt say this is correct but when water is evaporating it gains water in the clouds but is loosing water on the ground therefore water could possibly be the energy
