The pitcher had thrown the ball many times.
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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<span>Most emotion researchers agree that the basic emotions are </span>universal and they are biologically determined in human being which is the products of evolution.<span>
There are six basic emotions which are biologically present and they are fear, surprise, anger, disgust, happiness, and sadness. At times these take various further shapes and can be found in complex forms as well.</span>
The united state has a better living condition based on it's Capital GDP compared to that of Cuba, United state is considered to be a developed country unlike Cuba who is under developing.
